PERISCOPE, TANK: M36 (1240-00-980-9291) M36E1 (1240-00 … · PERISCOPE, TANK: M36 (1240-00-980-9291) M36EI (1240-00-348-8441) REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS You can

T M 9 - 1 2 4 0 - 3 8 0 - 3 4

T E C H N I C A L M A N U A L

D I R E C T S U P P O R T A N D

G E N E R A L S U P P O R T

M A I N T E N A N C E M A N U A L

V O L U M E I - T R O U B L E S H O O T I N G

V O L U M E I I - M A I N T E N A N C E

P E R I S C O P E , T A N K :

M 3 6 ( 1 2 4 0 - 0 0 - 9 8 0 - 9 2 9 1 )

M 3 6 E 1 ( 1 2 4 0 - 0 0 - 3 4 8 - 8 4 4 1 )

H E A D Q U A R T E R S , D E P A R T M E N T O F T H E A R M Y

M a y 1 9 8 5

WARNING

TM 9-1240-380-34

IMAGE INTENSIFIER TUBES CONTAIN RADIOACTIVE MATERIAL

Take these steps to avoid injury:

1. Never place radioactive tubes in your pocket.

2. Use extreme care not to break tubes while handling them.

3. Never remove radioactive tubes from cartons until ready to use them.

Take these steps if tube is broken:

1. Avoid personal contact with broken tubes. 2. See qualified medical personnel and notifyradiological protection officer.

3. For first aid instructions, see TB 43-0116 and TB MED 232.

4. For instruction on handling, storage and disposal of radioactive material, see TB 43-0122 andAR 755-15.

Use extreme care when handling image intensifier tube.This tube contains radioactive materials and can bedangerous when broken.

a

WARNING

TM 9-1240-380-34

HIGH VOLTAGE CAN KILL YOU.

BODY ASSEMBLY, INFRARED BODY ASSEMBLY, AND ELBOW ASSEMBLY CONTAINS HIGHVOLTAGE CONNECTIONS

Take these steps to avoid injury:

1. Do not contact high voltage connection when operating the body assemblies and elbowassembly.

2. After power is turned off, always ground high voltage connections.

For artificial respiration, see FM 21-11.

CLEANING SOLVENT CAN CAUSE FIRES

Cleaning solvents and the fumes from cleaning solvents can catch fire. Keep it and all materials that cancatch on fire away from flames. Use only in a room with a lot of fresh air.

NITROGEN GAS UNDER PRESSURE

DEATH

or severe injury may result if personnel fail to observe safetyprecautions listed in Job Performance Guide 113-091-9000R,

b / ( c b l a n k )

*TM 9-1240-380-34

Technical ManualNo. 9-1240-380-34

HEADQUARTERS,DEPARTMENT OF THE ARMY

Washington, D. C., 13 May 1985

TECHNICAL MANUAL

DIRECT SUPPORT ANDGENERAL SUPPORT

MAINTENANCE MANUAL

PERISCOPE, TANK:M36 (1240-00-980-9291)

M36EI (1240-00-348-8441)

REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS

You can help improve this manual. If you find anymistakes or if you know of a way to improve theprocedures, please let us know.

Mail your letter, DA Form 2028 (RecommendedChanges to Publications and Blank Forms), or DA Form2028-2 located in the back of this manual directly to:

CommanderU.S. Army Armament, Munitions and Chemical CommandATTN: AMSMC-MASRock Island, IL 61299-6000

A reply will be furnished to you.

* This manual supersedes TM 9-1240-380-34, 13 December 1977 andTM 9-1240-314-34, 23 June 1984.

i

TM 9-1240-380-34

TABLE OF CONTENTS

HOW TO USE THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHAPTER 1.

CHAPTER 2

CHAPTER 3.

CHAPTER 4.

Section 1.

Section 2.

Section 3.

Section 4.

VOLUME ITROUBLESHOOTING

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Organization . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .How to Troubleshoot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sample Fault Isolation Procedure . . . .. . . . . . . . . . . . . . . . . . . . . . . . . .

CHECKOUT PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Head Assembly Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Body Assembly Checkout . . . . . . . . . . . .. . .. . . . . . . . . . . . . . . . . . . . . . . .Infrared Body Assembly Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . .Elbow Assembly Checkout . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .

FAULT SYMPTOM INDEX . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FAULT ISOLATION PROCEDURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Scope . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Fault Isolation Procedure Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Head Assembly Fault Isolation Procedures . . . . . . . . . . . . . . . . . . .Cannot See Clearly or Pressure Cannot Be

Held in Head Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Body Assembly Fault Isolation Procedures . . . . . . . . . . . . . . . . . . . . . ..Cannot See Clearly or Pressure Cannot Be

Held in Body Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Infrared Body Assembly Fault IsolationProcedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dim. Blinking or No Green Field of ViewWhen Power is On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reticle Does Not Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Infrared Body Assembly Does Not Operate

On Battery Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pressure Cannot Be Held in Infrared Body

Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Paragraph

1-11-21-31-41-5

2-12-22-32-42-5

4-14-2

4-3

4-4

4-54-6

4-7

4-8

Page

x

1-1

1-11-11-21-41-4

2-1

2-12-22-62-162-28

3-1

4-1

4-14-14-1

4-1

4-1

4-5

4-6

4-11

4-114-24

4-30

4-34

ii

TM 9-1240-380-34

Section 5.

APPENDIX A.

CHAPTER 1.

Section 1.

Section 2.

CHAPTER 2.

Section 1.

Section 2.

Section 3.

Section 4.

CHAPTER 3.

Elbow Assembly Fault Isolation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Image is Bright When Shutter Assembly

Switch is OffImage Flickers or Cannot Be Seen or

Brightness Cannot Be Controlled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reticle Cannot Be Seen or Brightness

Cannot Be Controlled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .No Image or Reticle When Using M30

Instrument Light Electrical Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pressure Cannot Be Held in Elbow

Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

M36 Electrical Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M36 Electrical Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M36E1 Electrical Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M36E1 Electrical Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VOLUME IIMAINTENANCE

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Description and Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tabulated Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Differences Between Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GENERAL MAINTENANCE INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . .

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..General Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Painting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sealing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .General Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Special Tools and Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tools and Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INSPECTION UPON RECEIPT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Paragraph

4-9

4-10

4-11

4-12

4-13

A-1A-2A-3A-4

1-11-2

1-31-41-5

2-1

2-22-32-42-52-6

2-7

2-8

Page

4-41

4-41

4-43

4-64

4-74

4-79

A-1

A-1A-2A-3A 4

1-1

1-11-11-1

1-21-21-41-5

2-1

2-12-1

2-12-12-12-12-12-1

2-12-1

2-22-2

3-1

i i i

TM 9-1240-380-34

CHAPTER 4.

Section 1.

Section 2.

Section 3.

Section 4.

Section 5.

Section 6.

Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Inspection Upon Receipt Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Head Assembly Inspection Upon Receipt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Body Assembly Inspection Upon Receipt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Infrared Body Assembly Inspection Upon

Receipt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Elbow Assembly Inspection Upon Receipt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HEAD ASSEMBLY MAINTENANCE PROCEDURES . . . . . . . . . . . .

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .List of Head Assembly Items Contained

in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Valve Stem and Valve Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Valve Stem and Valve Core Maintenance

Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Valve Stem and Valve Core Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Valve Stem and Valve Core Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Arm Assembly and Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Arm Assembly and Packing Maintenance

Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Arm Assembly and Packing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Arm Assembly and Packing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Hooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Hooks Maintenance Procedure Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Hooks Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Hooks Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Window and Preformed Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Window and Preformed Packing

Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Window and Preformed, Packing

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Window and Preformed Packing

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Screw (Machine Thread Plug) and Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Screw (Machine Thread Plug) and Gasket

Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Screw (Machine Thread Plug) and Gasket

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Screw ( Machine Thread Plug) and Gasket

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Paragraph

3-1

3-23-33-4

3-53-6

4-1

4-2

4-34-44-5

4-64-74-8

4-94-104-11

4-12

4-13

4-14

4-15

4-16

4-17

Page

3-1

3-13-23-10

3-223-32

4-1

4-14-1

4-1

4-3

4-34-34 4

4-6

4-64-64-8

4-104-104-104-12

4-14

4-14

4-14

4-16

4-18

4-18

4-18

4-19

iv

TM 9-1240-380-34

Section 7.

CHAPTER 5.

Section 1.

Section 2.

Section 3.

Section 4.

Section 5.

Section 6.

Section 7.

Plate Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plate Assembly Maintenance

Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plate Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plate Assembly Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plate Assembly Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plate Assembly Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

BODY ASSEMBLY MAINTENANCE PROCEDURES . . . . . . . . . . . .

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .List of Body Assembly Items Contained

in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Housing Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Housing Packing Maintenance

Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Housing Packing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Housing Packing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Latch Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Latch Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Latch Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Strike . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Strike Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Strike Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Strike Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Housing Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Housing Assembly Maintenance

Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Housing Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Housing Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Deflection Knob Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Deflection Knob Assembly

Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Deflection Knob Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . .Deflection Knob Assembly

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Elevation Knob Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Elevation Knob Maintenance

Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Elevation Knob Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Elevation Knob Assembly

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Paragraph

4-184-194-204-214-22

5-1

5-2

5-35-45-5

5-65-75-8

5-95-105-11

5-125-135-14

5-155-16

5-17

5-185-19

5-20

Page

4-20

4-204-204-224-234-24

5-1

5-15-1

5-1

5-2

5-25-25-4

5-65-65-65-8

5-105-105-105-11

5-12

5-125-125-13

5-14

5-14-5-14

5-16

5-18

5-185-18

5-20

v

TM 9-1240-380-34

Section 8.

Section 9.

CHAPTER 6.

Section 1.

Section 2.

Section 3.

Section 4.

Section 5.

Valve Stem and Valve Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve Stem and Valve Core Maintenance

Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Valve Stem and Valve Core Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Valve Stem and Valve Core Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Eyepiece Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Eyepiece Assembly Maintenance

Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Eyepiece Assembly Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Eyepiece Assembly Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INFRARED BODY ASSEMBLY ( M36 )MAINTENANCE PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .List of Infrared Body Assembly Items

Contained in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cell Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cell Assembly Maintenance

Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cell Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cell Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Plunger, Spring, Retaining Ring, and Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plunger, Spring, Retaining Ring, and Key

Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plunger, Spring, Retaining Ring, and Key

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plunger, Spring, Retaining Ring, and Key

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Eyepiece Assembly Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Eyepiece Assembly Scale Maintenance

Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Eyepiece Assembly Scale Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Eyepiece Assembly Scale Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cap Assembly, Electron Tube and Collar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cap Assembly, Electron Tube and Collar

Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cap Assembly, Electron Tube and Collar

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cap Assembly, Electron Tube and Collar

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Paragraph

5-215-225-23

5-245-255-26

6-1

6-2

6-36-46-5

6-6

6-7

6-8

6-96-106-11

6-12

6-13

6-14

Page

5-22

5-225-225-24

5-26

5-265-265-30

6-1

6-16-1

6- I

6-2

6-26-26-4

6-6

6-6

6-6

6-8

6-10

6-106-106-12

6-16

6-16

6-16

6-18

vi

TM 9-1240-380-34

Section 6.

Section 7.

Section 8.

Section 9.

Section 10.

Section 11.

Section 12.

Cap Assembly, Converter, and Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cap Assembly, Converter, and Power Supply

Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cap Assembly, Converter, and Power Supply

Removal and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cap Assembly, Converter, and Power Supply

Assembly and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Protective Plug, Clamp, Wire, SleeveAsembly, Contact (Electrical), andConnector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Protective Plug, Clamp, Wire, SleeveAssembly, Contact (Electrical), andConnector Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Protective Plug, Clamp, Wire, SleeveAssembly, Contact (Electrical), andConnector Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Protective Plug, Clamp, Wire, SleeveAssembly, Contact (Electrical), andConnector Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Switch Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Switch Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Switch Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .




Contact (Electrical) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Contact (Electrical) Maintenance

Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Contact (Electrical) Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Contact (Electrical) Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lampholder and Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Lampholder and Packing Maintenance

Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Lampholder and Packing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Lampholder and Packing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Paragraph

6-15

6-16

6-17

6-18

6-19

6-20

6-216-226-23

6-246-256-26

6-276-286-29

6-306-316-32

6-336-346-35

Page

6-22

6-22

6-22

6-24

6-27

6-27

6-27

6-33

6-396-396-396-42

6-44

6-446-446-46

6-486-486-486-49

6-50

6-506-506-52

6-54

6-546-546-56

v i i

TM 9-1240-380-34

Section 13.

CHAPTER 7

Section 1.

Section 2.

Section 3.

Section 4.

Section 5.

Section 6.

Section 7.

Boresight Knob Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Boresight Knob Assembly Maintenance

Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Boresight Knob Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Boresight Knob Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELBOW ASSEMBLY (M36E1) MAINTENANCEPROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .List of Elbow Assembly Items Contained

in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Plunger, Strike and Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plunger, Strike and Key Maintenance

Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plunger, Strike and Key Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plunger, Strike and Key Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Image Intensifier Assembly andEyepiece Assembly Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Image Intensifier Assembly and EyepieceAssembly Packing MaintenanceProcedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Image Intensifier Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Eyepiece Assembly Packing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Eyepiece Assembly Packing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Image Intensifier Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Regulator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Regulator Assembly Maintenance

Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Regulator Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Regulator Assembly Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Switch Assembly Maintenance

Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Switch Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Switch Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .




Paragraph

6-366-376-38

7-1

7-2

7-37-47-5

7-67-77-87-97-10

7-117-127-13

7-147-157-16

7-177-187-19

7-207-217-12

Page

6-58

6-586-586-60

7-1

7-17-1

7-1

7-2

7-27-27-4

7-7

7-107-12

7-14

7-147-147-16

7-18

7-187-187-20

7-22

7-227-227-24

7-267-267-267-27

v i i i

TM 9-1240-380-34

Section 8.

Section 9.

CHAPTER 8.

CHAPTER 9.

APPENDIX A.

Section 1.

Section 2.

APPENDIX B.

APPENDIX C.

Lampholder and Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Lampholder and Packing Maintenance

Procedures Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Lampholder and Packing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Lampholder and Packing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Boresight Knobs Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Boresight Knobs Assembly

Maintenance Procedures Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Boresight Knobs Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Boresight Knobs Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FINAL INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Head Assembly Purging and Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Body Assembly Purging and Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Infrared Body Assembly Purging and

Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Elbow Assembly Purging and Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Head Assembly Final Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Body Assembly Final Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Infrared Body Assembly Final Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Elbow Assembly Final Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PACKAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Preparation for Packaging of

Optical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Packaging of Head Assembly, Body Assembly,

Infrared Body Assembly ( M36 ), and ElbowAssembly (M36E1 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Packaging in Containers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EXPENDABLE SUPPLIES AND MATERIALS LIST . . . . . . . . . . . . . .

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . .Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Explanation of Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Expendable Supplies and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MAINTENANCE TASK INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maintenance Task Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FABRICATED TOOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tube Extractor Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Paragraph

7-237-247-25

7-267-277-28

8-18-28-3

8-48-58-68-78-88-9

9-1

9-2

9-39-4

A-1A-2

B-1B-2

C-1C-2

Page

7-28

7-287-287-30

7-32

7-327-327-34

8-1

8-18-28-4

8-78-108-128-148-168-18

9-1

9-1

9-1

9-19-1

A-1

A-1A-1A-1

A-2

B-1

B-1B-2

C-1

C-1C-1

i x

TM 9-1240-380-34

This manual has

HOW TO USE THIS MANUAL

two volumes of maintenance information you will need to repair and service the M36and M36E 1 Periscopes.

● Volume I - Troubleshooting

● Volume II - Maintenance

The organization paragraph in each volume tells you what information you can find in each chapter andappendix.

There are four ways to find any maintenance information you need:

● Index on the front cover which tells what information is contained in each chapter

● Table of Contents located at the front of the manual which has a complete listing byparagraph number and page number

● Fault Symptom Index ( Vol I, Chap 3 ) which lists the fault symptoms and shows where tolook to fix them

● Maintenance Task Index ( Vol II, App. B) which lists major assemblies, subassemblies andparagraph numbers of all maintenance procedures

Before doing any maintenance, you should read and understand HOW TO TROUBLESHOOT on page1-3. If you do not know the equipment well, you should read the section on description and data ( Vol II,Chap 1).

Throughout the manual reference is made to a Job Performance Guide 113-091-9000R (JPG 41 C)which helps you to develop skills in doing the maintenance tasks.

X

TM 9-1240-380-34

TECHNICAL MANUAL


MAINTENANCE MANUAL

VOLUME I - TROUBLESHOOTING

PERISCOPE, TANK:

M36M36E1

Vol I

CHAPTER 1

INTRODUCTION

TM 9-1240-380-34

1-1. SCOPE

This volume contains troubleshooting requirements and procedures for direct support and general support(DS/GS) maintenance of the M36 and M36E1 Periscopes. See Volume II for maintenance procedures.

1-2. ORGANIZATION

a. Chapter 2, Checkout Procedure, gives you flow charts to follow to check that the periscopes areworking right.

b. Chapter 3, Fault Symptom Index, lists the fault symptoms and where to look in this manual to fixeach one.

c. Chapter 4, Fault Isolation Procedures, shows you step-by-step how to troubleshoot the faultsymptoms found in Chapter 3.

d. Appendix A, Wiring Diagrams, may be used to help you find the cause of a fault. Theycan be used to trace signal flow or to find out what a voltage should be.

Vol I

Para 1-1

1-1

TM 9-1240-380-34

1-3. HOW TO TROUBLESHOOT

The following steps tell you how to troubleshoot. A diagram of these steps is on page 1-3.

Do a visual check and list any faults on DA Form 2404 before making repairs. See Vol II,Chap 3 for what to check for.

If you see any faults that may affect the checkout procedure, fix them now. This does notmean small things like painting scratches.

Do the checkout procedure in Vol I, Chap 2 from the beginning until you find a faultsymptom.

When a fault symptom is found, go. to the chapter noted and follow the maintenanceprocedure given there. If you already know the fault symptom, look at the fault symptomindex in Chapter 3 of this volume. This will also tell you what to do.

After the fault symtom has been corrected, do the checkout procedure in Chapter 2 again.This is to make sure that all fault symptoms have been corrected.

If all fault symptoms are now correct, do the remaining maintenance tasks on DA Form 2404.

Do the final inspection given in Vol II, Chap 9.

The job is over and the good assembly is sent back to service.

If all fault symptoms were not corrected after step E, the bad assembly is sent back to the. .depot for repair.

The sample fault isolation procedure ( para 1-5 ) shows you how to use the flow charts in this volume.

Para 1-3

1 - 2 Vol I

TM 9-1240-380-34

1-3. HOW TO TROUBLESHOOT (CONT)

Para 1-3 ContVol I 1-3

TM 9-1240-380-34

1-4. TEST EQUIPMENT

National StockTest Equipment Number (NSN)

1. Light Source 1240-00-980-9292Control

2. Multimeter 6625-00-395-0587

3.0-36 VDC 6130-00-435-1116Power Supply

Test Reference

Checkout Body Assembly JPG 41C

Checkout Body Assembly JPG 41C

Checkout Body Assembly, Infrared JPG 41CBody Assembly, Elbow Assembly

1-5. SAMPLE FAULT ISOLATION PROCEDURE

The sample fault isolation procedure tells you how to use the flow charts in Chapters 2 and 4.

Callouts

oc

oD

oE

Description

This is the symptom shown in the Fault Symptom Index in Chapter 3.

Block number. Tells you the number of the block on the page. Block numbers startover at every page.

This is a note. It gives useful information that can help you in doing the procedure.A note will always come just before the step of the procedure that it is about.

A warning will be labeled at top of block. Always follow the instruction in this kindof block carefully: If you don’t, you may be injured or injure someone else.

A caution will also be labeled at top of block. The instructions in this kind of blocktell you what to do so you will not damage equipment. Be sure you always followcaution instructions carefully.

Index numbers are found in the procedures and the illustration to help you find theconnector, switch, knob, etc. The illustration will always be on the same or anopposite page. Remember you will never have to turn the page to find theillustration.

The circle is used to send you to another sheet of procedure to keep ontroubleshooting. The top number in the circle tells you what sheet to go to. Thebottom number tells you what block on that sheet to start with. For example:

means that you should go to sheet 3 block 01 to keep on the procedure.

Para 1-41 - 4 Vol I

PARA 4-6

VOL II.

TM 9-1240-380-34

1-5. SAMPLE FAULT ISOLATION PROCEDURE (CONT)

4-3. VIEW IS NOT CLEAR (SHEET 2 OF 3)

Para 1-5 Cont

Vol I 1-5

TM 9-1240-380-34


Callouts I Description

This tells you where you came from. For example 2.03 means you came from sheet2, block 03.

The top part of the box tells you what to do. The bottom part tells you how to doit. After you become more skilled at troubleshooting and know more about theequipment, you may find that you only need to read the top pan of the box.

This diamond shaped box is called a decision point. It asks you to answer a YESor NO question, after doing the what-to-do statement. If the answer is YES, youshould go down the YES branch. If the answer is NO, you should go down theNO branch.

Para 1-5 Cont

1 - 6 Vol I

TM 9-1240-380-34


4-3. VIEW IS NOT CLEAR (SHEET 3 OF 3)

REPMCE MACHINETHREAD PLUG ANDGASKET (VOL UPARA 4-4)

Vol I

Para 1-5 Cont

1 - 7 / ( 1 - 8 b l a n k )

TM 9-1240-380-34

CHAPTER 2

CHECKOUT PROCEDURE

2-1. SCOPE

Checkout of the M36 and M36E1 Periscopes are done by using the flow chart procedures in this chapter.You must do the checkout procedure from the beginning until a fault symptom is found. When it is, go tothe fault symptom index in Chapter 3. After you have corrected the fault, start at the beginning again anddo the checkout procedure until the periscope is working correctly.

Assembly Checkout

Head AssemblyBody AssemblyInfrared Body Assembly (M36)Elbow Assembly (M36E1 )

Figure Index No.

1234

Reference (para)

2-22-32-42-5

Para 2-1

Vol I 2-1

CHAPTER 3

TM 9-1240-380-34

2-2. HEAD ASSEMBLY CHECKOUT (SHEET 1 OF 4)

PERSONNEL: One

EQUIPMENT CONDITION: Head assembly on work bench

PRELIMINARY PROCEDURES: DO inspection upon receipt ( Vol II, para 3-3)

00 PURGE ANDCHARGE (VOL II,

PARA 8-2)

Para 2-2 (Sheet 1 of 4)

2 - 2 Vol I

CHAPTER 3

TM 9-1240-380-34


Vol I

Para 2-2 (Sheet 2 0f 4)

2 - 3

CHAPTER 3

CHAPTER 3.

TM 9-1240-380-34



2 - 4 Vol I

PARA 8-6VOL. II

TM 9-1240-380-34


Vol I


2 - 5

TM 9-1240-380-34

2-3. BODY ASSEMBLY CHECKOUT

TEST EQUIPMENT: Light source control0-36 VDC power supply

PERSONNEL: One

REFERENCES: JPG 41 C for connecting power

(SHEET 1 OF 10)

supply

EQUIPMENT CONDITION: Body assembly on work bench

PRILIMINARY PROCEDURES: Do inspection upon receipt ( Vol II, para 3-4)


2 - 6 Vol I

TM 9-1240-380-34

2-3. BODY ASSEMBLY CHECKOUT (SHEET 2 OF 10)

Vol I


2 - 7

CHAPTER 3.

TM 9-1240-380-34



2 - 8 VOL I

CHAPTER 3.

CHAPTER 3.

TM 9-1240-380-34


Vol I


2 - 9

CHAPTER 3.

PARA 8-3

VOL. II

TM 9-1240-380-34


Para 2-3 (Sheet 5 of 10)2 - 1 0 Vol I

CHAPTER 3.

CHAPTER 3.

TM 9-1240-380-34


Vol I


2 - 1 1

CHAPTER 3.

TM 9-1240-380-34



2 - 1 2 Vol I

CHAPTER 3.

TM 9-1240-380-34


Vol I


2 - 1 3

TM 9-1240-380-34



2 - 1 4 Vol I

CHAPTER 3.

PARA 8-3

PARA 8-7

VOL. II

VOL. II

TM 9-1240-380-34


Vol I


2 - 1 5

TM 9-2350-215-10

TM 9-1240-380-34

2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 1 OF 12)

APPLICABLE CONFIGURATIONS: M36

TEST EQUIPMENT: 0-36 VDC power supply

SUPPLIES: Heavy wire (short piece)Tape

PERSONNEL: One

REFERENCES: JPG 41 C for connecting power supply

EQUIPMENT CONDITION: Infrared body assembly on work bench, power off

PRELIMINARY PROCEDURES: Do inspection upon receipt ( Vol II, para 3-5)


2 - 1 6 Vol I

TM 9-1240-380-34


Vol I

Para 2-4 (Sheet 2 of 12)2 - 1 7

CHAPTER 3

TM 9-1240-380-34



2 - 1 8 Vol I

TM 9-1240-380-34


Vol I

Para 2-4(Sheet 4 of 12)2 - 1 9

CHAPTER 13.

TM 9-2350-215-10

TM 9-1240-380-34



2 - 2 0 Vol I

CHAPTER 13.

CHAPTER 3.

TM 9-1240-380-34


Vol I


2 - 2 1

CHAPTER 13.

CHAPTER 3.

TM 9-1240-380-34



2 - 2 2 Vol I

TM 9-2350-215-10.

CHAPTER 3.

TM 9-1240-380-34


Vol I


2 - 2 3

CHAPTER 3.

TM 9-1240-380-34

2-4. INFRARED BODY ASSEMBLY CHECKOUT


2 - 2 4 Vol I

CHAPTER 3.

2-4. INFRARED BODY ASSEMBLY CHECKOUT (SHEET 10 OF 12

TM 9-1240-380-34

Vol I

Para 2-4 (Sheet 10 of 12)2 - 2 5

CHAPTER 3.

TM 9-1240-380-34



2 - 2 6 Vol I

PARA 8-8.

PARA 8-4VOL. II

VOL. II

TM 9-1240-380-34


Vol I


2 - 2 7

TM 9-1240-380-34

2-5. ELBOW ASSEMBLY CHECKOUT (SHEET 1 OF 11)

APPLICABLE CONFIGURATIONS: M36E1


PERSONNEL: One

REFERENCES: JPG 4lC for connecting power supply

EQUIPMENT CONDITION: Elbow assembly on work bench

PRELIMINARY PROCEDURES: Do inspection upon receipt ( Vol II, para 3-6 )

Para 2-5 ( Sheet 1 of 11)2 - 2 8 Vol I

CHAPTER 3.

TM 9-1240-380-34

ELBOW ASSEMBLY CHECKOUT (SHEET 2 OF 11 )

Vol I


2 - 2 9

CHAPTER 3.

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2 - 3 0 Vol I

CHAPTER 3.

TM 9-1240-380-34

2-5. ELBOW ASSEMBLY CHECKOUT (SHEET 4 OF 11).

Vol I


2 - 3 1

CHAPTER 3.

CHAPTER 3.

TM 9-1240-380-34

2-5. ELBOW (SHEET 5 OF 11 )


2 - 3 2 Vol I

CHAPTER 3

TM 9-1240-380-34

2-5. ELBOW ASSEMBLY CHECKOUT (SHEET 6 OF 11 )

Para 2-5 (Sheet 6 of 11)2-33Vol I

CHAPTER 3.

CHAPTER 3.

TM 9-1240-380-34



2 - 3 4 Vol I

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Vol I


2 - 3 5

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2 - 3 6 Vol I

CHAPTER 3.

CHAPTER 3.

TM 9-1240-380-34


Vol I

Para 2-5 (Sheet 10 of 11)2 - 3 7

PARA 8-51.

PARA 8-9

TM 9-1240-380-34

2-5. ELBOW ASSEMBLY


2 - 3 8

CHECKOUT (SHEET 11 OF 11)

Vol I

TM 9-1240-380-34

CHAPTER 3

FAULT SYMPTOM INDEX

Fault Isolation Procedure orSymptom Maintenance Procedure(s)

HEAD ASSEMBLY

1. Cannot see clearly or pressure Purge and charge head assembly (Vol II, para 8-2)cannot be held in head assembly

2. Head assembly does not fasten a. Tighten screws holding hooks on head assemblytightly to body assembly (Vol II, para 4-9)

b. Replace hook(s) on head assembly ( Vol II,para 4-9)

3. Arm binds or does not move freely Send head assembly to depot for repair

4. Wing nuts on plate assembly bind Replace studs ( Vol II, para 4-18)when turned

BODY ASSEMBLY

5. Reticle does not light Replace lower housing ( Vol II, para 5-3)

6. Cannot see clearly or pressure Purge and charge body assembly ( Vol II, para 8-3)cannot be held in body assembly

7. Reticle not sharply focused Replace eyepiece assembly ( Vol II, para 5-24)

8. Parallax exists Replace lower housing ( Vol II, para 5-3)

9. Body assembly does not fasten a. Remove cotter pin from latch and adjust latchtightly to head assembly firmly ( Vol II, para 5-6)

b. Replace latch ( Vol II, para 5-6)

10. Loose boresight knobs Replace knob assembly (Vol II, para 5-15, 5-18)

11. Binding or rough turning of Replace knob assembly (Vol II, para 5-15, 5-18)boresight knobs

12. Incorrect voltage at contacts of Replace housing assembly ( Vol II, para 5-12)housing assembly

INFRARED BODY ASSEMBLY(M36)

13. Dim, blinking or no green field of Paragraph 4-5view when power is on

14. Reticle does not light Paragraph 4-6

Vol I 3 - 1

TM 9-1240-380-34

FAULT SYMPTOM INDEX (CONT)

Fault Isolation Procedure orSymptom Maintenance Procedure(s)

15. Infrared body assembly does not Paragraph 4-7operate on batter power

16. Pressure cannot be held in infrared Purge and charge infrared body assembly ( Vol II,body assembly para 8-4)

17. Reticle not sharply focused Replace eyepiece assembly ( Vol II, para 6-10 and6-13)

18. Infrared body assembly does not Replace latch ( Vol II, para 6-27)hold tightly to body assembly

19. Loose boresight knobs Replace knob spring ( Vol II, para 6-36)

20. Binding or rough turning of Replace knob assembly (Vol II, para 6-36)boresight knobs

ELBOW ASSEMBLY (M36E1)

21. Image is bright when shutter Paragraph 4-9assembly switch is off .

22. Image flickers or cannot be seen, or Paragraph 4-10brightness cannot be controlled

23. Reticle cannot be seen or brightness Paragraph 4-11Icannot be controlled

24. Reticle does not move when Replace knob assembly ( Vol II, para 7-26)boresight knob is turned

25. Parallax error in eyepiece Send elbow assembly to depot for repair

26. Reticle cannot be sharply focused Replace eyepiece assembly ( Vol II, para 7-6)

27. No image or reticle when using Paragraph 4-12M30 instrument light electricalconnector

28. Pressure cannot be held in elbow Purge and charge elbow assembly ( Vol II, para 8-5)assembly

3-2 Vol I

TM 9-1240-380-34

CHAPTER 4

FAULT ISOLATION PROCEDURES

Section 1. GENERAL

4-1. SCOPE

This chapter gives step-by-step procedures to troubleshoot the M36/M36E1 Periscope for fault symptomsfound during checkout. After the fault has been corrected, do the checkout procedure in Chapter 2 again.This is to make sure that all faults have been corrected.

4-2. FAULT ISOLATION PROCEDURE INDEX

Fault Isolation Procedures I Reference (Section) IHead Assembly 2Body Assembly 3Infrared Body Assembly (M36) 4Elbow Assembly (M36E1) 5

Section 2. HEAD ASSEMBLY FAULT ISOLATION PROCEDURES

4-3. CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN HEADASSEMBLY (SHEET 1 OF 5)

TOOLS: 1/4” flat tip screwdriver7/16“ open end wrench#O and #2 cross tip screwdriver (Phillips type)

SUPPLIES: Mild soap

PERSONNEL: One

REFERENCES: JPG 4lC for Checking leaksPurge and charge shutdown


Vol I

Para 4-1

4 - 1

PARA 4-3

TM 9-1240-380-34



4 - 2 Vol I

PARA 4-12

TM 9-1240-380-34


Vol I


4 - 3

PARA 4-6.

PARA 4-15.

TM 9-1240-380-34



4 - 4 Vol I

PARA 4-6.

TM 9-1240-380-34


Vol IPara 4-3 (Sheet 5 of 5)

4 - 5

TM 9-1240-380-34

Section 3. BODY ASSEMBLY FAULT ISOLATION PROCEDURES

4-4. CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN BODYASSEMBLY (SHEET 1 OF 5)

TOOLS: 3/8” open end wrench#2 cross tip screwdriver ( Phillips type)

SUPPLIES: Mild soap

PERSONNEL: One

REFERENCES: JPG 41C for Checking leaksPurge and charge shutdown



4 - 6 Vol I

PARA 5-21

TM 9-1240-380-34


Vol I


4 - 7

PARA 5-3

PARA 5-15

TM 9-1240-380-34



4 - 8 Vol I

4-4

PARA 5-3

TM 9-1240-380-34

CANNOT SEE CLEARLY OR PRESSURE CANNOT BE HELD IN BODYASSEMBLY (SHEET 4 OF 5)

Vol I


4 - 9

PARA 5-3

TM 9-1240-380-34



4 - 1 0 Vol I

TM 9-1240-380-34

Section 4. INFRARED BODY ASSEMBLY FAULT ISOLATION PROCEDURES

4-5. DIM, BLINKING OR NO GREEN FIELD OF VIEW WHEN POWER IS ON(SHEET 1 OF 13)


TEST EQUIPMENT: 0-36 VDC power supplyMultimeter

TOOLS: 1/4" flat tip screwdriver.050 socket head screw key (Allen wrench or equivalent)

PERSONNEL: One

REFERENCES: JPG 4lC for Connecting power supply

Using multimeter

EQUIPMENT CONDITION: Infrared body assembly on work bench

Vol I


4 - 1 1

TM 9-1240-380-34



4 - 1 2 Vol I

TM 9-1240-380-34



4-13

PARA 6-21

PARA 6-30

TM 9-1240-380-34



4 - 1 4 Vol I

PARA 6-30

TM 9-1240-380-34


Vol I


4 - 1 5

wTM 9-1240-380-34

4-5. DIM, BLINKING OR(SHEET 6 OF 13)


4 - 1 6

NO GREEN FIELD OF VIEW WHEN POWER IS ON

Vol I

PARA 21

TM 9-1240-380-34



4 - 1 7

PARA 6-15

TM 9-1240-380-34



4 - 1 8 Vol I

PARA 6-15

TM 9-1240-380-34


Para 4-5(Sheet 9 of 13)

4 - 1 9Vol I

TM 9-1240-380-34



4 - 2 0 Vol I

PARA 6-12

PARA 6-15


TM 9-1240-380-34

Vol I


4 - 2 1

PARA 6-15

PARA 6-12

PARA 6-18

TM 9-1240-380-34



4 - 2 2 Vol I

PARA 2-4

TM 9-1240-380-34


Vol I

Para 4-5 (Sheet 13 of 13)4 - 2 3

TM 9-1240-380-34

4-6. RETICLE DOES NOT LIGHT (SHEET 1 OF 6)



TOOLS: .050 socket head screw key (Allen wrench or equivalent)

PERSONNEL: One

REFERENCES: JPG 41C for Connecting power supplyUsing multimeter


Para 4-6 (Shset 1 of 6)

4 - 2 4 Vol I

PARA 6-33

TM 9-1240-380-34


Vol I


4 - 2 5

PARA 6-33

TM 9-1240-380-34


Para 4-6 (Sheest 3 of 6)

4 - 2 6 Vol I

TM 9-1240-380-34


Vol I


4 - 2 7

PARA 6-30

PARA 5-33

TM 9-1240-380-34



4 - 2 8Vol I

TM 9-1240-380-34



4 - 2 9

TM 9-2350-215-10

TM 9-1240-380-34

4-7. INFRARED BODY ASSEMBLY DOES NOT OPERATE ON BATTERY POWER(SHEET 1 OF 4)


PERSONNEL: One



4 - 3 0 Vol I

T M 9 - 1 2 4 0 - 3 8 0 - 3 4



4 - 3 1

PARA 6-21

PARA 6-15

TM 9-1240-380-34



4 - 3 2 Vol I

TM 9-1240-380-34


Vol I

Para 4-7 (Sheet 4 of 4)4-33

TM 9-1240-380-34

4-8. PRESSURE CANNOT BE HELD IN INFRARED BODY ASSEMBLY (SHEET 1OF 7)


TOOLS: 7/16" open end wrench3/ 16" socket head screw key (Allen wrench or equivalent)1/4" flat tip screwdriver# 1 cross tip screwdriver ( Phillips type)

SUPPLIES: Mild soap

PERSONNEL: One

REFERENCES: JPG 41C for: Checking leaksPurge and charge shutdown



4 - 3 4 Vol I

PARA 6-24

T M 9 - 1 2 4 0 - 3 8 0 - 3 4

4-8. PRESSURE CANNOT BE HELD IN INFRARED BODY ASSEMBLY (SHEET 2of 7)

Vol I


4 - 3 5

PARA 6-3

TM 9-1240-380-34



4 - 3 6 Vol I

PARA 6-33

TM 9-1240-380-34


Vol I


4 - 3 7

PARA 6-36

PARA 6-15

TM 9-1240-380-34



4 - 3 8 Vol I

PARA 6-21

4-8.

TM 9-1240-380-34

PRESSURE CANNOT BE HELD IN INFRARED BODY ASSEMBLY (SHEET 6OF 7)

Vol I


4 - 3 9

PARA 6-31

TM 9-1240-380-34



4 - 4 0 Vol I

TM 9-1240-380-34

Section 5. ELBOW ASSEMBLY FAULT ISOLATION PROCEDURES

4-9. IMAGE IS BRIGHT WHEN SHUTTER ASSEMBLY SWITCH IS OFF (SHEET1 OF 2)


TEST EQUIPMENT: Multimeter

PERSONNEL: One

REFERENCES: JPG 4lC for using multimeter

Equipment CONDITION: Elbow assembly on work bench


4 - 4 1

PARA 7-11

PARA 7-11

TM 9-1240-380-34

4-9. IMAGE IS BRIGHT WHEN2 OF 2)

SHUTTER ASSEMBLY SWITCH IS OFF (SHEET


4 - 4 2 Vol I

4-10. I M A G E F L I C K E R S O R B R I G H T N E S S C A N N O T B EC O N T R O L L E D ( S H E E T 1 O F 2 1 )

TM 9-1240-380-34


TEST EQUIPMENT 0-36 VDC power supplyMultimeter

TOOLS: Soldering iron

SUPPLIES: Solder (item 12, Vol II, App. A)

PERSONNEL: One

REFERENCES: JPG 41C for Using power supplyUsing multimeterUsing soldering iron


Vol I

Para 4-10 (Sheet 1 of 21)4 - 4 3

PARA 7-11

TM 9-1240-380-34

4-10. IMAGE FLICKERS OR CANNOT BE SEEN OR BRIGHTNESS CANNOT BECONTROLLED (SHEET 2 OF 21)


4-4s4 Vol I

PARA 7-11

TM 9-1240-380-34


Vol I


4 - 4 5

PARA 7-11

TM 9-1240-380-34



4 - 4 6 Vol I

TM 9-1240-380-34


Vol I


4 - 4 7

PARA 7-11

PARA 7-11

TM 9-1240-380-34



4 - 4 8

PARA 7-11

T M 9 - 1 2 4 0 - 3 8 0 - 3 4


Vol I


4 - 4 9

TM 9-1240-380-34



4 - 5 0 Vol I

PARA 7-11

TM 9-1240-380-34


Vol I


4 - 5 1

PARA 7-13

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4 - 5 2 Vol I

PARA 7-11

PARA 7-6

TM 9-1240-380-34


Vol I


4 - 5 3

PARA 7-11

PARA 7-6

TM 9-1240-380-34



4 - 5 4 Vol I

PARA 7-11

TM 9-1240-380-34



4 - 5 5

TM 9-1240-380-34



4 - 5 6 Vol I

PARA 7-11

PARA 7-6

PARA 7-11

TM 9-1240-380-34


Vol I


4 - 5 7

TM 9-1240-380-34


Para 4-10 (Sheet 16 of 21)4-58

Vol I

TM 9-1240-380-34


Vol I


4 - 5 9

PARA 7-8

PARA 7-11

TM 9-1240-380-34



4 - 6 0 Vol I

PARA 4-10

4-61

PARA 7-14

PAR 7-6

PARA 7-14

TM 9-1240-380-34


Vol I

PAR 7-14

PARA 7-12

TM 9-1240-380-34



4 - 6 2 Vol I

PARA 7-6

PARA 7-14

PAR 8-9

PARA 7-11

PARA 7-6

PARA 7-14

TM 9-1240-380-34


Vol I


4 - 6 3

PARA 7-11

TM 9-1240-380-34

4-11. RETICLE CANNOT BE SEEN OR BRIGHTNESS CANNOT BE CONTROLLED(SHEET 1 OF 10)




SUPPLIES: Solder (item 12, Vol II, App. A)

PERSONNEL: One

REFERENCES: JPG 4lC for: Using soldering ironUsing multimeterConnecting power supply


PRELIMINARY PROCEDURES: Remove regulator assembly ( Vol II, para 7-12, steps 1 and 2)

Para 4-11 (Sheet 1 of 10)4 - 6 4 Vol I

TM 9-1240-380-34


Vol I


4 - 6 5

PARA 7-11

TM 9-1240-380-34



4 - 6 6 Vol I

4-11. RETICLE CANNOT BE(SHEET 4 OF 10)

SEEN OR BRIGHTNESS CANNOT BE

TM 9-1240-380-34

CONTROLLED

Vol I


4 - 6 7

PARA 7-23

PARA 7-11

TM 9-1240-380-34


Para 4-11 (Shee 5 of 10)

4 - 6 8 Vol I

PARA 7-14

TM 9-1240-380-34


Vol I


4 - 6 9

PARA 7-14

PARA 7-11

PARA 8-9

TM 9-1240-380-34



4 - 7 0 Vol I



TM 9-1240-380-34

CONTROLLED

Vol I


4 - 7 1

PARA 7-14

PARA 7-11

TM 9-1240-380-34



4 - 7 2 Vol I

PARA 7-14

PARA 7-11

PARA 8-9



TM 9-1240-380-34

CONTROLLED

Vol I


4 - 7 3

TM 9-1240-380-34

4-12. NO IMAGE OR RETICLE WHEN USING M30 INSTRUMENT LIGHTELECTRICAL CONNECTOR (SHEET 1 OF 5)



SUPPLIES: Solder (item 12, Vol H, App. A)

PERSONNEL: One

REFERENCES: JPG 41C for: Using multimeterUsing power supplyUsing soldering iron



4 - 7 4 Vol I

PARA 7-11

4-12. NO IMAGEELECTRICAL

TM 9-1240-380-34

OR RETICLE WHEN USING M30 INSTRUMENT LIGHTCONNECTOR (SHEET 2 OF 5)

Vol I


4 - 7 5

PARA 7-11

PARA 2-5

TM 9-1240-380-34




4-76 Vol I

PARA 7-11

TM 9-1240-380-34

4-12. NO IMAGE OR RETICLE WHEN USING M30 INSTRUMENT LIGHTELECTRICAL CONNECTOR (SHEET 4 OF 5)

Vol I


4 - 7 7

PARA 7-11

PARA 7-11

PARA 8-9

TM 9-1240-38034




4 - 7 8 Vol I

TM 9-1240-380-34

4-13. PRESSURE CANNOT BE HELD IN ELBOW ASSEMBLY (SHEET 1 OF 6)


TOOLS: 7/16” open end wrench# 1 cross tip screwdriver (Phillips type)3/16’” socket head screw key (Allen wrench or equivalent)

SUPPLIES: Mild soap

PERSONNEL: One

REFERENCES: JPG 41C for: Checking leaksPurge and charge shutdown



4 - 7 9

PARA 7-17

TM 9-1240-380-34



4 - 8 0 Vol I

PARA 7-6

TM 9-1240-380-34


Vol I

Para 4-13 (Sheet 3 of 6)4-81

PARA 7-23

PARA 7-26

TM 9-1240-380-34


Para 4-13 (Sheet 4 of 6)4 - 8 2

Vol I

TM 9-1240-380-34


Vol I


4 - 8 3

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4 - 8 4 Vol I

TM 9-1240-380-34

APPENDIX A

WIRING DIAGRAMS

A-1. M36 ELECTRICAL SCHEMATIC DIAGRAM

Para A-1

Vol I A - 1

TM 9-1240-380-34

A-2. M36 ELECTRICAL BLOCK DIAGRAM

Para A-2

A - 2 Vol I

TM 9-1240-380-34

A-3. M36E1 ELECTRICAL SCHEMATIC DIAGRAM

Para A-3

Vol I A - 3

TM 9-1240-380-34

A-4. M36E1 ELECTRICAL BLOCK DIAGRAM

Para A-4

A - 4 Vol I

TM 9-1240-380-34

TECHNICAL MANUAL


MAINTENANCE MANUAL

VOLUME II - MAINTENANCE

PERISCOPE, TANK:

M36M36E1

Vol II

TM 9-1240-380-34

CHAPTER 1

INTRODUCTION

Section 1. GENERAL

1-1. SCOPE

This volume contains the maintenance requirements and procedures for direct support and generalsupport (DS/GS) maintenance for the M36/M36E1 Periscopes. See Volume I for troubleshootingprocedures.

1-2. ORGANIZATION

a. Chapter 2, General Maintenance Information, lists maintenance items and references generalprocedures that are necessary to do the maintenance in this manual.

b. Chapter 3, Inspection Upon Receipt, gives the kind of defects to look for when the unit isreturned to DS/GS. A complete inspection should be made and faults listed on DA Form 2404 beforeany repairs are made.

c. Chapter 4 thru 7, Maintenance Procedures, give step-by-step procedures to repair faults foundduring inspection or troubleshooting.

d. Chapter 8, Final Inspection, gives procedures to be done after repair to make sure that theperiscope works and is ready for packaging and installation.

e. Chapter 9, Packaging, gives procedures for packaging the periscope for storage or shipment.

f. Appendix A, Expendable Supplies and Materials, lists the supplies and materials needed to repairthe periscope.

g. Appendix B, Maintenance Task Index, helps you find the necessary maintenance tasks for theperiscope.

h. Appendix C, Fabricated Tool, gives the design of special tools needed to repair the periscope.

Vol II

Para 1-1

1-1

TM 9-1240-380-34

Section 2. DESCRIPTION AND DATA

1-3. DESCRIPTION

The M36/M36E1 is a monocular periscope for the tank commander. It is part of the fire control system inthe M60 series tanks. The M36 periscope is mounted in M119 periscope mount. The M36E1 is mountedin M119 E 1 mount. A link assembly interconnects the periscope’s sighting with the tank machine gun.The periscope is made up of three main parts:

a. HEAD ASSEMBLY. This part contains an entrance window, a prism (mirror) which ismechanically connected (by way of link assembly) to the gun elevation drive and a mounting plate bywhich the periscope is attached to the periscope mount.

b. BODY ASSEMBLY. This part contains a unity power mirror between entrance and exit windows.It houses the daylight viewing optical system which is collimated to the body housing to insureparallelism in the line of sight. It also houses the night viewing optical system which is the third mainpart. The M36 night viewing unit is the Infrared Body Assembly. The M36E1 night viewing unit is theElbow Assembly.

c. INFRARED BODY ASSEMBLY. This monocular telescope is used for infrared sighting. Withinthe assembly is an integral reticle projection system positioned by boresight knobs.

d. ELBOW ASSEMBLY. The elbow or image intensification assembly amplifies available light bymeans of an image intensifier tube and power supply, making objects visible without the aid of asearchlight. Its optical system is like the Infrared Body Assembly.

Para 1-3

1 - 2 Vol II

TM 9-1240-380-34

1-3. DESCRIPTION (CONT)

Para 1-3 Cont

Vol II 1 - 3

TM 9-1240-380-34

1-4. TABULATED DATA

a. DIMENSIONS (approximate)

Height . . . . . . . . . . . . . . . . . . . ....... . . . . . . . . . . . . . . . . . . . . . . . .Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

b. WEIGHT

Head assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Body assembly . . . . . . . . . . . . . . . . . . .. . . . . . .Infrared assembly (M36) . . . . . . . . . . . . . . ..Elbow assembly (M36E1)

c. OPTICAL CHARACTERISTICS

Daylight systemMagnification. .. . . . . . . . . . . . . . . . . . . . . .Field-of-view . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Infrared systemMagnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Field-of-view .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Image intensifier systemMagnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unity systemMagnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Field-of-viewHorizontal ..... .. . . . . . . . . . . . . . . . . . . . . .Vertical .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18.84 inches13.50 inches12.62 inches

25 pounds11 pounds24 pounds24 pounds

7 power10 degrees

8 power8 degrees

7.1 power

1 power

60 degrees10 degrees

Para 1-4

1 - 4 Vol II

TM 9-1240-380-34

1-5. DIFFERENCES BETWEEN CONFIGURATIONS

The difference between the M36 Periscope and the M36E1 Periscope is the night viewing telescope. TheM36 uses the infrared body assembly and the M36E1 uses the elbow assembly.

Para 1-5

Vol II 1-5/(1-6 blank)

TM 9-1240-380-34

CHAPTER 2

GENERAL MAINTENANCE INFORMATION

Section 1. GENERAL

2-1. SCOPE

This chapter tells you what special tools and test equipment are needed and where to find generalinformation for the maintenance procedures in this volume.

Section 2. REFERENCE DOCUMENTS

2-2. GENERAL MAINTENANCE

General maintenance procedures for fire control material are in TM 9-254 and Job PerformanceGuide 113-091-9000R (JPG 41C).

2-3. CLEANING

General cleaning procedures are in JPG 41C.

2-4. PAINTING

General painting procedures are in TM 43-0139.

2-5. SEALING

General instructions for how to use sealing compounds are in JPG 41 C.

2-6. LUBRICATION

General instructions for how to use lubricants are in JPG 41 C.

Section 3. SAFETY PROCEDURES

2-7. GENERAL PROCEDURE

General safety procedures are in AR 385-40 Safety Accident Reporting and Records.

Safety procedures for using power supplies and nitrogen tanks are in JPG 41C.

Vol II

Para 2-1

2 - 1

TM 9-1240-380-34

Section 4. SPECIAL TOOLS AND TEST EQUIPMENT

2-8. TOOLS AND TEST EQUIPMENT

Item

1. Dioptometer

2.Power Supply , 0-36 VDC

3. Purging Kit, firecontrol

National Stock Part NumberNumber (NSN) (FSCM)

4931-00-536-5557 7680631

6130-00-435-1116 . . .

4931-00-065-1110 SC4931-95-CL-J54

Use

Focus eyepiece assembly

Final test body assembly,infrared body assembly(M36), and elbow assembly(M36E1) .

Purge and chargeassemblies

Para 2-8

2 - 2 Vol II

TM 9-1240-380-34

CHAPTER 3

INSPECTION UPON RECEIPT

3-1. SCOPE

This chapter gives procedures to check the M36 / M36E1 Periscope for faults you can see when it isreceived in the DS/GS shop. It also tells you what part of this volume to go to for various repair. Acomplete inspection should be made and all faults listed on DA Form 2404 before taking anymaintenance actions.

3-2. INSPECTION UPON RECEIPT INDEX

Procedure Figure Index No. Reference (para)

Head Assembly 1 3-3Body Assembly 2 3-4Infrared Body Assembly ( M36 ) 3 3-5Elbow Assembly ( M36E1 ) 4 3-6

Para 3-1

Vol II 3 - 1

TM 9-1240-380-34

3-3. HEAD ASSEMBLY INSPECTION UPON RECEIPT

TOOLS: Valve core wrench3/8” and 3/16” flat tip screwdriver#0 and #2 cross tip screwdriver ( Phillips type)1/2” box end wrench3/8” and 7/16” open end wrench

SUPPLIES: Lens tissue (item 14, App. A)Paint (item 5, App. A)Primer (item 6, App. A)

PERSONNEL: One

REFERENCES: TM 43-0139 for paintingJPG 41C for Cleaning

Completing DA Form 2404


FRAME 1

Step

1.

2.

3.

4.

5.

Procedure Maintenance Action

Check head assembly (1) forcracks or dents.

Check observation window (2)for cracks, scratches or dirt.

Check head assembly (1) fordirt, chipped or scratchedpaint and corrosion.

Using #0 Phillips screwdriver,check that seven screws (3)are tight.

Using 3/8” screwdriver, checkthat machine thread plug (4)is tight.

GO TO FRAME 2

If cracks or dents are found,do purging and chargingprocedure. If leak is present,tell your supervisor.

Clean using lens paper. Ifcracks are found, replacewindow.

Clean. Paint if needed.

Tighten. Replace if missing.


Reference

Para 8-2

Para 4-12

JPG 41CTM 43-0139

. . .

Para 4-15

Para 3-3

3 - 2 Vol II

TM 9-1240-380-34

3-3. HEAD ASSEMBLY INSPECTION UPON RECEIPT (CONT)

Para 3-3 Cont

Vol II 3 - 3

TM 9-1240-380-34


FRAME 2

Step

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Procedure

Using #0 Phillips screwdriver,check that eight screws (1)are tight.

Using #2 Phillips screwdriver,check that two screws (2) aretight.

Check that two pins (3) arenot bent or corroded.

Check that packing (4) is notworn or damaged.


Using 1/2” wrench, check thatnut (6) is tight.

Check that two pins (7) arenot damaged or corroded.

Using #2 Phillips screwdriver,check that two screws ( 8 ) aretight.


Check that name plate (10)can be read.

GO TO FRAME 3

Maintenance Action



Clean. Tell your supervisor ifbent or missing.

Replace if missing ordamaged.



Clean. If missing or damaged,tell your supervisor.



If it cannot be read, tell yoursupervisor.

Reference

. . .

. . .

JPG 41Cfor cleaning

Para 4-12

. . .

. . .

JPG 41Cfor cleaning

. . .

. . .

. . .

Para 3-3 Cont

3 - 4 Vol II

TM 9-1240-380-34


Para 3-3 Cont

Vol II 3 - 5

TM 9-1240-380-34


FRAME 3

Step

1.

2.

3.

4.

5.

6.

7.

8.

Procedure

Using #2 Phillips screwdriver,check that 13 screws (1) aretight.

Using 3/8” wrench, removecap (2). Using valve corewrench, check that valve core(3) is tight and seated. Using7/ 16” wrench, check that stem(4) is tight.

Using 3 / 8" wrench, install cap(2).

Check that strap (5) is notdamaged.

Check that pin (6) is not bentor missing.

Check that pin (7) is notmissing.

Check that wire seal (8) isnot broken or missing.

Using 3/16” flat tipscrewdriver, check that screw(9) is tight.

GO TO FRAME 4

Maintenance Action


Replace cap, valve stem, andcore if missing or damaged.Tighten valve stem if loose.

Replace if damaged ormissing.

If bent or missing, tell yoursupervisor.

Replace if missing.

If wire seal (8) is broken ormissing, tell your supervisor.

If screw is loose ormissing, tell your supervisor.

Reference

Para 4-8

Para 4-3

Para 4-3

Para 4-3

. . .

Para 4-8

. . .

. . .

Para 3-3 Cont

3 - 6 Vol II

TM 9-1240-380-34


Para 3-3 Cont

Vol II 3 - 7

TM 9-1240-380-34


FRAME 4

Step

1.

2.

3.

4.

5.

6.

Procedure

Using #2 Phillips screwdriver,check that ten screws (1) aretight.

Check that two pins (2) arenot missing or damaged.

Check that two nuts (3) arenot missing or damaged.

Check that two wing nuts (4)are not missing or damaged.

Check that two wing nuts (4)turn freely.

Check that two pins (6) arenot missing.

NOTE

FOLLOW-ON MAINTENANCE:

Correct faults listed on DAForm 2404 that may affectthe checkout procedure.Do checkout procedure(Vol I, para 2-2).

END OF TASK

Maintenance Action


If missing or damaged,replace.



If binding, replace studs (5).

If missing, replace.

Reference

. . .

Para 4-18

Para 4-18

Para 4-18

Para 4-18

Para 4-18

Para 3-3 Cont

3 - 8 Vol II

TM 9-1240-380-34


Para 3-3 Cont

Vol II 3-9

3-10

TM 9-1240-380-34

3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT

TOOLS: 9/64” socket head screw key (Allen wrench or equivalent)Valve core wrench3/8” flat tip screwdriver0.187 spanner wrench#0, #1, and #2 cross tip screwdriver (Phillips type)0.070 jewelers screwdriver3/8” and 7/16” open end wrench# 1 offset cross tip screwdriver ( Phillips type)

SUPPLIES: Lens tissue (item 14, App. A)Paint (item 5, App. A)Primer (item 6, App. A)

PERSONNEL: One

REFERENCES: TM 43-0139 for paintingJPG 41C for: Cleaning

Completing DA Form 2404EQUIPMENT CONDITION: Body assembly on work bench

FRAME 1

Step

1.

2.

3.

4.

5.

6.

Procedure

Check body (1) for largedents and broken windows(2).

Check around windows (2) formissing or detective

Check body (1) forpaint and corrosion.

Check windows (2)scratches. or dirt.

seal.

chipped

for cracks,

Using #1 Phillips screwdriver,check that four screws (3)are tight.

Check that plate (4) can beread.

GO TO FRAME 2

Maintenance Action

Report damage to supervisor.

If defects are found, dopurging and chargingprocedure.If leaks are found, tell yoursupervisor.

Paint chipped or scratchedareas. Clean corroded areas.

If windows are scratched orcracked, tell your supervisor.If windows are dirty, cleanwith lens tissue.


If plate cannot be read, tellyour supervisor.

Reference

. . .

Para 8-3. . .

TM 43-0139JPG 41C forcleaning

. . .JPG 41C forcleaning

. . .

. . .

Para 3-4

Vol II

TM 9-1240-380-34

3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT)

Para 3-4 Cont

Vol II 3 - 1 1

TM 9-1240-380-34

3-4. BODY ASSEMBLY INSPECTION UPON RECEIPT CONT)

FRAME 2

Step

1.

2.

3.

4.

5.

6.

7.

8.

Procedure


Check that latch (2) movessmoothly and that cotter pin(3) is not missing.

Using 9/64" Allen wrench,check that two screws (4) aretight.

Using #2 Phillips screwdriver,check that six screws (5) aretight.

Using #2 Phillips screwdriver,check that four screws (6) aretight.

Using jewelers screwdriver,check that two screws (7) aretight.

Check eyepiece (8) turns fromstop to stop.

Using jewelers screwdriver,check that three screws (9)are tight.

GO TO FRAME 3

Maintenance Action


Replace latch or cotter pin ifmissing.





If binding, tell your supervisor.


Reference

Para 5-6

Para 5-6

Para 5-6

. . .

. . .

. . .

. . .

. . .

Para 3-4 Cont

3 - 1 2 Vol II

TM 9-1240-380-34


Para 3-4 Cont

Vol II 3 - 1 3

TM 9-1240-380-34


FRAME 3

Step Procedure

1.

2.

3.

4.

5.

6.


Using #0 Phillips screwdriver,check that six screws (2) aretight.


Check latch (4) movessmoothly.



GO TO FRAME 4

Maintenance Action




Replace.


If cannot be read, tell yoursupervisor.

Reference

. . .

. . .

. . .

Para 5-6

. . .

. . .

Para 3-4 Cont

3 - 1 4 Vol II

TM 9-1240-380-34


Para 3-4 Cont

Vol II 3 - 1 5

TM 9-1240-380-34


FRAME 4

Step

1.

2.

3.

4.

5.

6.

7.

8.

9.

Procedure

Check that latch (1) movessmoothly and that cotter pin(2) is not missing.



Check that strike (5) is notbent or broken.

Pull out and check knob (6)turns from stop to stopwithout binding.

Using spanner wrench, checkthat screw (7) is tight.

Check markings on scale (8)can be read.

Using # 1 Phillips screwdriver,check that four screws (9) aretight.

Check if observation window(10) is damaged or missing.

GO TO FRAME 5

Maintenance Action

Replace latch or cotter pin.



Replace.

Replace if binding.

Tighten. Replace if missing

Clean. Replace knob assemblyif cannot be read aftercleaning.


If damaged or missing, tellyour supervisor.

Reference

Para 5-6

. . .

. . .

Para 5-9

Para 5-15

. . .

Para 5-15

. . .

. . .

Para 3-4 Cont

3 - 1 6 Vol II

TM 9-1240-380-34


Para 3-4 Cont

Vol II 3 - 1 7

TM 9-1240-380-34

3-4. BODY

FRAME 5

ASSEMBLY INSPECTION UPON RECEIPT (CONT)

Step

1.

2.

3.

4.

5.

6.

7.

8.

Procedure

Using 3/8” open end wrench,remove cap (1). Using valvecore wrench, check that valve(2) is tight and seated.

Using 7/16" open endwrench, check that stem (3) istight.

Check that valve cap strap (4)is not damaged.

Pull out and check knob (5)turns from stop to stopwithout binding.

Using spanner wrench, checkthat screw (6) is tight.

Check markings on scale (7)can be read.


Using 3/8” open end wrench,install valve cap (1) on valvestem (3).

GO TO FRAME 6

Maintenance Action

Tighten valve. Replace cap orvalve if missing.

Tighten.

Replace.

Replace if binding.


Clean. Replace knob assemblyif scale cannot be read aftercleaning.


Para 3-4 Cont

3 - 1 8 Vol II

Reference

Para 5-21

. . .

Para 5-21

Para 5-18

Para 5-18

Para 5-18

. . .

Para 5-21

TM 9-1240-380-34

Vol II


Para 3-4 Cont

3 - 1 9

TM 9-1240-380-34


FRAME 6

Step

1.

2.

3.

4.

5.

6.

7.

Procedure

Using #2 Phillips screwdriver,check that screw (1) is tight.

Using #2 Phillips screwdriver,check that three screws (2)are tight and clamp is notmissing.

Check wire terminals (3) fordamage or corrosion.

Using #1 Phillips and #1offset Phillips screwdrivers,check two screws (4) fortightness.

Check boot (5) for damage.

Check two contact pins (6)for damage or corrosion.

Check both contact pins (6)return to start position bypushing pins in with fingers.

NOTE


Correct faults listed on DAForm 2404 that may affectthe checkout procedure.Do checkout procedure(Vol I, Para 2-3).

END OF TASK

Maintenance Action



Replace housing assembly ifdamaged. Clean if corroded.


Replace housing assembly ifdamaged.

Clean if corroded. Replacehousing assembly if damaged.

If springs are weak ormissing, replace housingassembly.

Reference

. . .

. . .

JPG 41CPara 5-12

. . .

Para 5-12

JPG 41CPara 5-12

Para 5-12

Para 3-4 Cont

3 - 2 0 Vol II

TM 9-1240-380-34


Para 3-4 Cont

Vol II 3 - 2 1

3-22

TM 9-1240-380-34

3-5. INFRARED BODY ASSEMBLY INSPECTION UPON RECEIPT


TOOLS: 1/8", 3/16", 1/4" flat tip screwdrivers3/8" open end wrench1/16" pin open face spanner wrench.028", .035", .050", 1/16", 1/8", 3/16" socket head screw key(Allen wrench or equivalent)#1 cross tip screwdriver ( Phillips type)

SUPPLIES: Paint (item 5, App. A)Primer (item 6, App. A)

PERSONNEL: One

REFERENCES: TM 43-0139 for paintingTM 9-254 for general maintenanceJPG 41C for completing DA Form 2404


FRAME 1

Step

1.

2.

3.

4.

5.

Para 3-5

Procedure

Check infrared body assembly(1) for cracks or dents.

Check lens (2) for cracks,scratches, and dirt.

Check prism (3) for cracksand scratches.

Check infrared body assembly(1) for dirt, chipped orscratched paint and corrosion.

Using .035" Allen wrench,check that five setscrews (4)are tight.

GO TO FRAME 2

Maintenance Action

If cracks are found, dopurging and chargingprocedure. If leaks are found,tell your supervisor.

a. Clean, if dirty.b. If cracked or scratched,

tell your supervisor.

Tell your supervisor, ifcracked or scratched.

Clean. Paint chipped orscratched area.


Vol II

Reference

Para 8-4

TM 9-254

. . .

TM 9-254TM 43-0139

. . .

TM 9-1240-380-34

3-5. INFRARED BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT)

Para 3-5 Cont

Vol II 3 - 2 3

TM 9-1240-380-34


FRAME 2

Step

1.

2.

3.

4.

5.

6.

Procedure

Using 1/16” Allen wrench,check that two setscrews (1)are tight.

Using .028” Allen wrench,check that two setscrews (2)are tight.

Using .050” Allen wrench,check that two setscrews (3)are tight in knob.

usingchecktight.

usingchecktight.

3/ 16” Allen wrench,that four screws (4) are

1/8” Allen wrench,that setscrew (5) is

Try to move key (6) (anymovement shows looseness).Check for damage.

GO TO FRAME 3

Para 3-5 Cont

3 - 2 4

Maintenance Action



Tighten. Replace setscrewknob if missing.



Tighten. Replace if damaged.

Vol II

Reference

. . .

. . .

. . .

. . .

. . .

Para 6-6

TM 9-1240-380-34


Para 3-5 Cont

Vol II 3 - 2 5

TM 9-1240-380-34

3-5. INFRARED

FRAME 3

Step

1.

2.

3.

4.

5.

6.

BODY ASSEMBLY INSPECTION UPON RECEIPT (CONT)

Procedure

Check that cap (1) is tight.Check that gasket (2) isinstalled.

Using 1/4” screwdriver, checkthat four screws (3) are tight.

Check switch plate (4) can beread.

Using 3/8” open end wrench,check that valve cap (5) istight.

Using 1/16” pin open facespanner wrench, check thattwo screws (6) are tight.

Using 1/4”’ screwdriver, checkthat eight screws (7) on twoknob assemblies (8) are tight.

GO TO FRAME 4

Maintenance Action

Tighten. Replace gasket ifmissing.


If plate cannot be read, tellyour supervisor.




Reference

Para 6-15

. . .

. . .

Para 6-24

. . .

. . .

Para 3-5 Cont

3 - 2 6 Vol II

TM 9-1240-380-34


Para 3-5 Cont

Vol II 3 - 2 7

TM 9-1240-380-34


FRAME 4

Step

1.

2.

3.

4.

5.

Procedure

Using Phillips screwdriver,check that 15 screws (1) aretight.

Check latch (2) for damage.Using 1/4” screwdriver, checktwo screws (3) (under latch)are tight.

Check that lampholder (4) istight. Check that cord (5)and packing (6) are installed.

Check contacts (7) fordamage.

Using 3/ 16“ screwdriver,check that four screws (8) aretight.

GO TO FRAME 5

Maintenance Action


a. Replace latch if damaged.b. Tighten. Replace

screws if missing.

Tighten. Replace missingpart(s).

Replace if damaged.


Reference

. . .

Para 6-27

Para 6-33

Para 6-30

. . .

Para 3-5 Cont

3 - 2 8 Vol II

TM 9-1240-380-34


Para 3-5 Cont

Vol II 3 - 2 9

TM 9-1240-380-34


FRAME 5

Step

1.

2.

3.

4.

5.

6.

7.

Procedure

Using .050” Allen wrench,check that setscrew (1) istight.

Check that plug (2) is notmissing.

Without pulling out boresightknobs (3), check that eachknob is firmly seated againstfixed clutch.

Pull out each boresight knob(3). Turn each knob (3) andcheck for binding.

Check that two scales (4) canbe read.


Using 1/ 8" screwdriver, checkthat four screws (6) are tight.

NOTE



END OF TASK

Maintenance Action


If missing or damaged,your supervisor.

If knob slips on clutch,replace knob assembly.

Replace knob assemblybinding.

tell

if

Clean. Replace knob assemblyif scales cannot be read.



Reference

Para 6-30

. . .

Para 6-36

Para 6-36

Para 6-36

. . .

. . .

Para 3-5 Cont

3 - 3 0 Vol II

TM 9-1240-380-34


Para 3-5 Cont

Vol II 3 - 3 1

TM 9-1240-380-34

3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT


TOOLS: #0, #1, and #2 cross tip screwdriver (Phillips type)#2 cross tip offset screwdriver (Phillips type)3/8” open end wrench3/32” and 1/16” pin open face spanner wrench.050”, 1/16”, 1/8”, 3/16”, and 5/64” socket head screw key(Allen wrench or equivalent)

SUPPLIES: Paint (item 5, App. A)Primer (item 6, App. A)

PERSONNEL: One

REFERENCES: TM 43-0139 for paintingTM 9-254 for general maintenance


FRAME 1

Step Procedure

1. Check elbow assembly (1) forcrack or dents.

2. Check lens (2) and (3) forcracks, scratches, and dirt.

3.

4.

5.

Looking through lens (3),check prism (4) for cracksand scratches.

Look through lens (3), checkfor condensation.

Check elbow assembly (1) fordirt, chipped or scratchedpaint and corrosion.

GO TO FRAME 2

Para 3-6

3 - 3 2

Maintenance Action

If cracks are found, performpurging and chargingprocedure.If leaks are found, faultisolate for leaks.

a. Clean, if dirty.b. If cracked or

scratched, tell yoursupervisor.

If cracks or scratches arefound. tell your supervisor.

If condensation is seen, purgeand charge.

Clean. Paint chipped orscratched area.

Reference

Para 8-5

TM 9-254. . .

. . .

Para 8-5

TM 9-254TM 43-0139

Vol II

TM 9-1240-380-34

3-6. ELBOW ASSEMBLY INSPECTION UPON RECEIPT (CONT)

Para 3-6 Cont

Vol II 3 - 3 3

TM 9-1240-380-34


FRAME 2

Step

1.

2.

3.

4.

5.

6.

Procedure

Using 1/16” Allen wrench,check that three setscrews (1)are tight.


Using .050” Allen wrench,check that three setscrews (3)are tight.


Using 3/16" Allen wrench,check that four screws (5) aretight.

Try to move key (6) (anymovement shows looseness).Check for damage.

GO TO FRAME 3

Maintenance Action






Tighten. Replace if damaged.

Reference

Para 7-6

Para 7-6

Para 7-6

Para 7-6

. . .

Para 7-3

Para 3-6 Cont

3 - 3 4 Vol II

TM 9-1240-380-34


Vol II

Para 3-6 Cont

3 - 3 5

TM 9-1240-380-34


FRAME 3

Step

1.

2.

3.

4.

5.

6.

7.

8.

9.

Procedure

Check that switch assemblyplate (1) can be read.

Using 3/ 8" open end wrench,check that valve cap (2) istight.

Using 1/16" pin open facespanner wrench, check thattwo screws (3) are tight.



Using .050" Allen wrench,check that four setscrews (6)in knob (7) are tight.

Check that RTV sealant is inholes (8),


Using 1/8” Allen wrench,check that setscrew (10) istight.

GO TO FRAME 4

Maintenance Action







Put RTV sealant in holes (8).



Reference

. . .

Para 7-17

Para 7-26

. . .

. . .

Para 7-14

JPG 41CPara 7-14

. . .

. . .

Para 3-6 Cont

3 - 3 6 Vol II

TM 9-1240-380-34


Para 3-6 Cont

Vol II 3 - 3 7

TM 9-1240-380-34


FRAME 4

Step

1.

2.

3.

4.

5.

6.

7.

8.

Procedure

Using #l Phillips screwdriver,check that six screws (1) aretight.

Using #2 Phillips offsetscrewdriver, check that fourscrews (2) are tight.

Check latch (3) for damage.Using #1 Phillips screwdriver,check that two screws (4)(under latch) are tight.

Check that lampholder (5) istight. Check that cord (6) andpacking (7) are installed.

Check contact (8) for damage.


Using #2 Phillips screwdriver,check that screw (10) is tight.

Using 5/64” Allen wrench,check that setscrew (11) istight.

GO TO FRAME 5

Maintenance Action



a. Replace latch if damaged.b. Tighten. Replace if

missing.

Tighten. Replace missingpart(s).

If damaged, tell yoursupervisor.




Reference

. . .

. . .

Para 7-20. . .

Para 7-23

. . .

. . .

. . .

. . .

Para 3-6 Cont

3 - 3 8 Vol II

TM 9-1240-380-34


Para 3-6 Cont

Vol II 3 - 3 9

TM 9-1240-380-34


FRAME 5

Step

1.

2.

3.

4.

5.

6.

7.

8.

Procedure

Using .050" Allen wrench,check that setscrew (1) istight.

Check that plug (2) is notmissing.

Without pulling out onboresight knobs (3), checkthat each knob is firmlyseated against fixed clutch.

Pull out on each boresightknob (3). Turn each knob (3)and check for binding.

Check that two scales (4) canbe read.

Check that identification plate(5) can be read and is notdamaged.


Using .050” Allen wrench,check that three setscrews (7)are tight.

GO TO FRAME 6

Maintenance Action

Tell your supervisor. ifsetscrew is not tight.

Tell your supervisor, if plug ismissing.

If knob slips on clutch,replace knob assembly.

Replace knob assembly ifbinding.

If scales cannot be read,replace knob assembly.

Clean. If plate cannot be read,tell your supervisor.



Reference

. . .

. . .

Para 7-26

Para 7-26

Para 7-26

. . .

. . .

Para 3-6 Cont

3 - 4 0 Vol II

TM 9-1240-380-34


Para 3-6 Cont

Vol II 3 - 4 1

TM 9-1240-380-34


Procedure

Check that switch (1) movesto ON and OFF positionswithout binding,

Check that plug (2) is present.

Look into hole (3) and checkthat plunger (4) is present.



Using .050" Allen wrench,check that two setscrews (7)are tight.

NOTE



END OF TASK

Maintenance Action

If binding, tell your supervisor.

If missing, tell your supervisor.

If missing, tell your supervisor.




Reference

. . .

. . .

. . .

. . .

. . .

. . .

Para 3-6 Cont

3 - 4 2 Vol II

TM 9-1240-380-34


Vol II

Para 3-6 Cont

3-43/(3-44 blank)

HEAD ASSEMBLY

TM 9-1240-380-34

CHAPTER 4

MAINTENANCE PROCEDURES

Section 1. GENERAL

4-1. SCOPE

This chapter gives maintenance procedures for the head assembly.

4-2. LIST OF HEAD ASSEMBLY ITEMS CONTAINED IN THIS CHAPTER

Figure ReferenceItem Index No. (para)

Valve Stem and Valve Core 1 4-3Arm Assembly and Packing 2 4-6Hooks 3 4-9Window and Preformed PackingScrew (Machine Thread Plug) and Gasket

4 4-125 4-15

Plate Assembly 6 4-18

Para 4-1

4-1/(4-2 blank)

TM 9-1240-380-34

Section 2. VALVE STEM AND VALVE CORE

4-3. VALVE STEM AND VALVE CORE MAINTENANCE PROCEDURES INDEX

Task Reference (para)

Removal 4-4Installation 4-5

4-4.

TOOLS:

VALVE STEM AND VALVE CORE REMOVAL

3/8" and 7/16" open end wrenchValve core wrench’

PERSONNEL: One


Step

1 .

2.

3.

4.

Procedure

Using 7/16" wrench, remove valve (1) from head assembly (2).

Using 7/16" and 3/8” wrenches, remove cap (3) from valve stem (4).

Remove strap (5) from valve stem (4) and cap (3).

Using valve core wrench, remove valve core (6) from valve stem (4).

END OF TASK

Para 4-3

Vol II 4 - 3

TM 9-1240-380-34

4-5. VALVE STEM AND VALVE CORE INSTALLATION

TOOLS: 7/16“ and 3/8” open end wrenchValve core wrench

SUPPLIES: Sealing compound (item 8, App. A)

PERSONNEL: One

REFERENCES: JPG 41C for sealing

EQUIPMENT CONDITION: Valve assembly parts and head assembly on work bench

FRAME 1

Step Procedure

1. Using valve core wrench, put valve core (1) in valve stem (2) and tighten.

2. Put strap (3) on valve stem (2) and cap (4).

3. Using 7/16” and 3/8” wrenches, put cap (4) on valve stem (2).

4. Put sealing compound on threads of valve stem (2) (JPG).

5. Using 7/16“ wrench, put valve (5) in head assembly (6) and tighten.

NOTE

I FOLLOW-ON MAINTENANCE:

Do checkout procedure ( Vol I, para 2-2).

END OF TASK

Para 4-54 - 4 Vol II

TM 9-1240-380-34

4-5. VALVE STEM AND CORE INSTALLATION (CONT)

Para 4-5 Cont

Vol II 4 - 5

TM 9-1240-380-34

Section 3. ARM ASSEMBLY AND PACKING

4-6. ARM ASSEMBLY AND PACKING MAINTENANCE PROCEDURES INDEX


Removal 4 -7Installation 4-8

4-7. ARM ASSEMBLY AND PACKING REMOVAL

TOOLS: 4 oz ball peen hammer3/32” pin drive punch5/64” socket head screw key (Allen wrench or equivalent)#2 cross tip screwdriver ( Phillips type)0.070 jewelers screwdriver

SUPPLIES: Cleaning solvent (item 13, App. A)

PERSONNEL: One

REFERENCES: JPG 41C for cleaning


F RAME 1

Step

1 .

2.

3.

4.

5.

Procedure

NOTE

Pin (1) is tapered and can be removed one way only.

Using punch and hammer, remove pin (1) from arm assembly (2).

Using Allen wrench, remove setscrew (3) and arm assembly (2).

Using #2 Phillips screwdriver, remove thirteen screws (4) and thirteen washers (5) andcover (6) from two locaitng pins (7).

Using cleaning solvent, remove old sealing compound from threads of screw (4).

Using jewelers screwdriver, remove packing (8) from groove ( 9).

END OF TASK

Para 4-64 -6 Vol II

TM 9-1240-380-34

4-7. ARM ASSEMBLY AND PACKING REMOVAL (CONT)

Para 4-7 Cont

Vol II 4 - 7

TM 9-1240-380-34

4-8. ARM ASSEMBLY AND PACKING INSTALLATION

TOOLS: 4 oz ball peen hammer5/64” socket head screw key (Allen wrench or equivalent)#2 cross tip screwdriver ( Phillips type)4 oz soft faced hammer

SUPPLIES: Sealing compound (itemsGrease (item 4, App. A)

PERSONNEL: One

8, 10, 11, App. A)

REFERENCES: JPG 41C for lubricating


FRAME 1

Step

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Procedure

Put a small amount of grease on packing (1) (JPG).

Using your fingers, install packing (1) in groove (2) of cover (3).

Put sealing compound (item 10, App. A) where surface of cover (3) meets with surface ofhead assembly (4) and on threads of screws (5).

Using soft faced hammer, place cover (3) onto locating pins (6).

Using screwdriver, install thirteen washers (7) and thirteen screws (5) in head assembly(4).

Place arm assembly (8) on shaft (9) of head assembly (4). Make sure holes in armassembly (8) and shaft (9) are in line.

Put sealing compound (item 11, App. A) on drive pin (10).

NOTE

Pin (10) is tapered and can only be driven in one way.

Using ball peen hammer, drive pin (10) into holes.

Put sealing compound (item 8, App. A) on threads of setscrew (11).

Using 5/64” Allen wrench, install setscrew (11).

NOTE

FOLLOW-ON MAINTENANCE

Do checkout procedure ( Vol 1, para 2-2).

END OF TASK

Para 4-8

4 - 8 Vol II

TM 9-1240-380-34

4-8. ARM ASSEMBLY AND PACKING INSTALLATION (CONT)

Para 4-8 Cont

Vol II 4 - 9

TM 9-1240-380-34

Section 4. HOOKS

4-9. HOOKS MAINTENANCE PROCEDURES INDEX



4-10. HOOKS REMOVAL

TOOLS: #2 cross tip screwdriver ( Phillips type)4 oz ball peen hammer1/8” punch

PERSONNEL: One

EQUIPMENT CONDITION: assembly on work bench

FRAME 1

Step

1.

2.

3.

Procedure

Using punch and hammer, remove two pins (1).

Using screwdriver, remove two screws (2), two washers (3),assembly (5).

Using screwdriver, remove two screws (6), two washers (7),head assembly (5).

END OF TASK

and hook

hook (8),

(4) from

and shim

head

(9) from

Para 4-94 - 1 0 Vol II

TM 9-1240-380-34

4-10. HOOKS REMOVAL (CONT)

Para 4-10 ContVol II 4 - 1 1

TM 9-1240-380-34

4-11. HOOKS INSTALLATION

TOOLS: #2 cross tip screwdriver (Phillips type)4 oz ball peen hammer

PERSONNEL One


FRAME 1

Step

1.

2.

3.

4,

Procedure

While holding hook (1) in place, use screwdriver to install two washers (2) and twoscrews (3) in head assembly (4) (Do not tighten).

Using hammer, drive in two pins (5).

Using screwdriver, tighten two screws (3).

While holding shim (6) and hook (7) in place, using screwdriver, install two washers (8)and two screws (9) in head assembly (4).

NOTE



END OF TASK

Para 4-11

4 - 1 2 Vol II

TM 9-1240-380-34

4-11. HOOKS INSTALLATION (CONT)


TM 9-1240-380-34

Section 5. WINDOW AND PREFORMED PACKING

4-12. WINDOW AND PREFORMED PACKING MAINTENANCE PROCEDURESINDEX



4-13. WINDOW AND PREFORMED PACKING REMOVAL

TOOLS: #0 cross tip screwdriver ( Phillips type)1/8” flat tip screwdriver

SUPPLIES: Dry cleaning solvent (item 13, App. A)Cloth (item 3, App. A)

PERSONNEL: One

REFERENCES: JPG 4lC for cleaning


FRAME 1

Step Procedure

Using #0 Phillips screwdriver, remove four screws (1) and two clamps (2).

Using #0 Phillips screwdriver, remove four screws (3), two clamps (4), and observationwindow (5) from head assembly (6).

Using cloth and cleaning solvent, clean old sealing compound from housing of headassembly (6) and observation window (5) (JPG).

Remove preformed packing (7). Use 1/8” screwdriver if necessary.

Using cloth and cleaning solvent, clean old adhesive from head assembly (6) (JPG).

END OF TASK

Para 4-124 - 1 4 Vol II

TM 9-1240-380-34

4-13. WINDOW AND PREFORMED PACKING REMOVAL (CONT)

Para 4-13 Cont

Vol II 4 - 1 5

TM 9-1240-380-34

4-14. WINDOW AND PREFORMED PACKING INSTALLATION

TOOLS: #0 cross tip screwdriver (Phillips type)

SUPPLIES: Sealing compound (item 8, App. A)Dry cleaning solvent (item 13, App. A)Adhesive ( item 1, App.Cloth (item 3, App. A)

PERSONNEL: One

A)

REFERENCES: JPG 41C for Using sealing compoundUsing adhesiveCleaning


Procedure

Put adhesive on rear surface of preformed packing (l) (JPG).

Install preformed packing (1) in head assembly (2).

Using cloth and cleaning solvent, wipe off excess adhesive from head assembly (2)(JPG).

Put a bead of sealing compound in groove of observation window mounting surface (3)(JPG).

Put a small amount of sealing compound on threads of eight screws (4) (JPG).

With bevel side up, position observation window (5) against mounting surfaces (3).

While holding four clamps (6 and 7) in place with bevel side against observationwindow, use screwdriver to put in and tighten screws (4).

Using cloth and cleaning solvent, wipe off excess sealing compound from observationwindow (5) (JPG).

NOTE



END OF TASK

Para 4-144-16 Vol II

TM 9-1240-380-34

4-14. WINDOW AND PREFORMED PACKING INSTALLATION (CONT)

Para 4-14 Cont

Vol II 4 - 1 7

TM 9-1240-380-34

Section 6. SCREW (MACHINE THREAD PLUG) AND GASKET

4-15. SCREW (MACHINE THREAD PLUG) AND GASKET MAINTENANCEPROCEDURES INDEX



4-16. SCREW (MACHINE THREAD PLUG) AND GASKET

TOOLS: 3/8" flat tip screwdriver

PERSONNEL: One


FRAME 1

REMOVAL

Step Procedure

1. Using screwdriver, remove machine thread plug (1) and gasket (2) from head assembly(3).

END OF TASK

P a r a 4 - 1 5

4 - 1 8 Vol II

TM 9-1240-380-34

4-17. SCREW (MACHINE THREAD PLUG) AND GASKET

TOOLS: 3/8” flat tip screwdriver

PERSONNEL: One


FRAME 1

INSTALLATION

Step Procedure

1. Put gasket (1) on

2. Using screwdriver,

machine thread plug (2).

install machine thread plug (2) and gasket (1) in head assembly (3).

NOTE



END OF TASK

Para 4-17

4 - 1 9Vol II

TM 9-1240-380-34

Section 7. PLATE ASSEMBLY

4 - 1 8 . PLATE ASSEMBLY MAINTENANCE PROCEDURES INDEX


Removal 4-19Disassembly 4-20Assembly 4-21Installation 4-22

.

4-19. PLATE ASSEMBLY

TOOLS: #2 cross tip screwdriver4 oz ball peen hammer1/8” punch

PERSONNEL: One

REMOVAL

(Phillips type)


FRAME 1

Step Procedure

Using screwdriver, remove ten screws ( 1).

Pull and remove plate assembly (2) from head assembly (3).

Look at two locator pins (4). If bent or damaged, using punch and hammer, remove twolocator pins (4) from head assembly (3).

END OF TASK


TM 9-1240-380-34

4-19. PLATE ASSEMBLY REMOVAL (CONT)

Para 4-19 ContVol II 4 -21

TM 9-1240-380-34

4-20. PLATE ASSEMBLY DISASSEMBLY

TOOLS: #0 cross tip screwdriver ( Phillips type)4 oz ball peen hammer1/16” punch5/8” open end wrench

PERSONNEL: One

EQUIPMENT CONDITION: Plate assembly on work bench

Step

1 .

2.

3.

4.

5.

Procedure

Using punch and hammer, remove two pins (1) from two nuts (2) and two studs (3).

Using wrench, unscrew and remove two nuts (2).

Using hands, unscrew two wing nuts (4).

Using screwdriver, unscrew and remove six screws (5) and six washers (6) from twostuds (3).

Remove two studs (3) from plate assembly (7).

END OF TASK

Para 4-20

4-22 Vol II

TM 9-1240-380-34

4-21. PLATE ASSEMBLY ASSEMBLY

TOOLS: #0 cross tip screwdriver ( Phillips type)4 oz ball peen hammer - -

-

1/8” punch5/8” open end wrench

PERSONNEL: One

EQUIPMENT CONDITION: Plate assembly parts on work bench

FRAME 1

Step Procedure

1 .

2.

3.

4.

5.

Put two studs (1) through two holes (2) in plate assembly (3).

Line up the holes in the rim of the studs (1) with the holes in the back of the plateassembly (3). Using screwdriver, install six washers (4) and six screws (5).

Using hands, screw two wing nuts (6) on to the two studs (1).

Using wrench, screw two nuts (7) on the two studs (1). Line up the holes in the nuts(7) with the holes in the studs (1).

Using punch and hammer, install two pins (8) through nuts (7) and studs (1).

END OF TASK

Para 4-21

Vol II 4 - 2 3

TM 9.1240-380-34

4-22. PLATE ASSEMBLY INSTALLATION

TOOLS: #2 cross tip screwdriver ( Phillips type)4 oz ball peen hammer1/8” punch

SUPPLIES: Sealing compound (item 10, App. A)PERSONNEL: One

REFERENCES: JPG 41C for using sealing compoundEQUIPMENT CONDITION: Head assembly and plate assembly on work bench

FRAME 1

Step Procedure

1. If two locator pins (1) are missing in head assembly (2), using punch and hammer,install two pins (1).

2. Put plate assembly (3) on pins (1).

3. Put sealing compound (item 10, App. A) on threads of screws (4).

4. Using screwdriver, install ten screws (4).

NOTE


Do checkout procedure ( Vol I, para 2-2 ).

END OF TASK


TM 9-1240-380-34

4-22. PLATE ASSEMBLY INSTALLATION (CONT)


5-0

TM 9-1240-380-34

Vol II

TM 9-1240-38034

CHAPTER 5

BODY ASSEMBLY MAINTENANCE PROCEDURES

Section 1. GENERAL

5-1. SCOPE

This chapter gives maintenance procedures for the body assembly.

5-2. LIST OF BODY ASSEMBLY ITEMS CONTAINED IN THIS CHAPTER

Item

Housing Packing

StrikeHousing Assembly and Related PartsDeflection Knob AssemblyElevation Knob AssemblyValve Stem and Valve CoreEyepiece Assembly

Figure ReferenceIndex No. (para)

1 5-32 5-63 5-94 5-125 5-15

5-185-215-24

Vol II

Para 5-15-1

TM 9-1240-380-34

Section 2. HOUSING PACKING

5-3. HOUSING PACKING MAINTENANCE PROCEDURES INDEX


HOUSING PACKING REMOVAL

9/64’” socket head screw key (Allen wrench or equivalent)1/8” punch4 oz ball peen hammer

Removal 5-4installation 5-5

5-4.

T O O L S :


FRAME 1

S t e p Procedure

1. Using hammer and punch, remove pin (1) in direction shown by arrow.

Using punch and hammer, drive pin (2) in direction of arrow for about 1/4” only.2“3. Using Allen wrench, remove two screws (3).

4. Remove lower housing (4) from upper housing (5).

5. Remove packing (6) from lower housing (4).

END OF TASK

P a r a 5 - 35 - 2 Vol II

TM 9-1240-380-34

5-4. HOUSING PACKING REMOVAL (CONT)

Para 5-4 Cont

Vol II 5 - 3

TM 9-1240-380-34

5-5. HOUSING PACKING INSTALLATION

TOOLS: 9/64” socket head screw key (Allen wrench or equivalent)1/8” punch1/4” flat tip screwdriver4 oz ball peen hammer

SUPPLIES: Grease (item 4, App. A)

PERSONNEL: One



FRAME 1

Step Procedure

1. Put grease on surfaces of packing (1) (JPG).

2. Install packing (1) in groove of housing (2).

3. Place

4. Using

5. Using

6. Using

7. Using

END

housing (2) onto housing (3) and make sure screw holes are in line.

Allen wrench, install two screws (4) but do not tighten.

punch and hammer, install pin (5).

screwdriver, pry pin (6) into mounting hole.

Allen wrench, tighten two screws (4).

NOTE



OF TASK


TM 9-1240-380-34

5-5. HOUSING PACKING INSTALLATION (CONT)

Para 5-5 ContVol II 5 - 5

TM 9-1240-380-34

Section 3. LATCH

5-6. LATCH MAINTENANCE PROCEDURES INDEX



5-7. LATCH REMOVAL

TOOLS: Long nose pliers# 1 cross tip screwdriver ( Phillips type)

PERSONNEL: One


FRAME 1

Step Procedure

NOTE

Cotter pin (1) is not used with latch (2). Begin at step 2when replacing latch (2).

1. Using pliers, straighten ends of cotter pin (1) and remove from latch (3).

2. Using screwdriver, remove two screws (4), two washers (5), and latch (2) or (3) frombody assembly (6).

END OF TASK

P a r a 5 - 65 - 6 Vol II

TM 9-1240-380-34

5-7. LATCH REMOVAL (CONT)

Para 5-7 Cont

Vol II 5 - 7

TM 9-1240-380-34

5-8. LATCH INSTALLATION

TOOLS: Long nose pliers# 1 cross tip screwdriver (Phillips type)

PERSONNEL: One


FRAME 1

Step Procedure

NOTE

Cotter pin (1) is not used with latch (2). Begin at step 3when installing latch (2).

1. Open latch (3) as shown in picture and put in cotter pin (1).

2. Using pliers, bend ends of cotter pin (1) to prevent cotter pin (1) from coming out oflatch (3).

3. While holding latch (2) or (3) in place, use screwdriver to install two screws (4) andtwo washers (5) in body assembly (6).

. END OF TASK

Para 5-85 -8 Vol II

TM 9-1240-380-34

5-8. LATCH INSTALLATION (CONT)

Para 5-8 Cont

Vol II 5 - 9

TM 9-1240-380-34

Section 4. STRIKE

5-9. STRIKE MAINTENANCE PROCEDURES INDEX


RemovalInstallation

5-105-11

5 - 1 0 . STRIKE REMOVAL

TOOLS: # 1 cross tip screwdriver ( Phillips type)

PERSONNEL: One


Procedure

Using screwdriver, remove two screws (1), two washers (2), and strike (3) from bodyassembly (4).

END OF TASK

Para 5-95-10 Vol II

TM 9-1240-380-34

5-11. STRIKE INSTALLATION


PERSONNEL: One


FRAME 1

Step Procedure

1. While holding strike (1) in place, use screwdriver to install two washers (2) and twoscrews (3) in body assembly (4).

NOTE



END OF TASK

Para 5-11Vol II 5 - 1 1

5-13.

TM 9-1240-380-34

Section 5. HOUSING ASSEMBLY

5-12. HOUSING ASSEMBLY MAINTENANCE PROCEDURES INDEX


RemovalInstallation

5-135-14

HOUSING ASSEMBLY REMOVAL

TOOLS: # 1 cross tip screwdriver

PERSONNEL: One

(Phillips type)

Para 5-125 - 1 2 Vol II

TM 9-1240-380-34

5-14. HOUSING ASSEMBLY INSTALLATION

TOOLS: # 1 cross tip screwdriver ( Phillips type)

PERSONNEL: One


FRAME 1

Step Procedure

1. Put clamp (1) around wires (2).

2 . While holding housing assembly (3) and clamp (1) in place, use screwdriver to installthree washers (4) and three screws (5) in body assembly (6).

NOTE


Do checkout procedure (Vo1 I. para 2-3).

I END OF TASK

Para 5-14

Vol II 5 - 1 3

Para 5-15

5-14

TM 9-1240-380-34

Section 6. DEFLECTION KNOB ASSEMBLY

5-15. DEFLECTION KNOB ASSEMBLY MAINTENANCE PROCEDURES INDEX



5-16. DEFLECTION KNOB ASSEMBLY REMOVAL

TOOLS: # 1 cross tip screwdriver ( Phillips type)Long nose pliersJewelers screwdriver

PERSONNEL: One

EQUIPMENT CONDITION: Body asembly on work bench

Procedure

Using Phillips screwdriver, remove four screws (1), four washers (2), and deflectionboresight knob assembly (3) from body assembly (4).

Using pliers, remove pin (5) from body assembly (4).

Using jewelers screwdriver, remove packing (6) from deflection(3).

END OF TASK

boresight knob assembly

Vol II

TM 9-1240-380-34

5-16. DEFLECTION KNOB ASSEMBLY REMOVAL (CONT)

Para 5-16 Cont

Vol II 5-15

Para 5-17

5-16

TM 9-1240-380-34

5-17. DEFLECTION KNOB ASSEMBLY INSTALLATION

TOOLS: # 1 cross tip screwdriver ( Phillips type)Long nose pliers


PERSONNEL: One

REFERENCES: .JPG 4lC for lubricating packing


Procedure

Put a thin film of grease on surface of packing (1) (JPG).

Place packing (1) on deflection boresight knob assembly (2).

Using pliers, install pin (3) in body assembly (4).

Install deflection boresight knob assembly (2) into body assembly (4)near to the eyepiece.

Using screwdriver, install four screws (5) with four washers (6).

NOTE



END OF TASK

with index mark

Vol II

TM 9-1240-380-34

5-17. DEFLECTION KNOB ASSEMBLY INSTALLATION (CONT)


TM 9-1240-380-34

Section 7. ELEVATION KNOB ASSEMBLY

5-18. ELEVATION KNOB ASSEMBLY MAINTENANCE PROCEDURES INDEX



5-19. ELEVATION KNOB ASSEMBLY REMOVAL

TOOLS: #1 cross tip screwdriver ( Phillips type)


Procedure

NOTE

If guide (1) cannot be removed with knob assembly (2),do steps 5 and 6.

Using screwdriver, remove four screws (3) and four washers (4).

Pull knob assembly (2), packing (5), guide (1) and packing (6) from body assembly (7).

Remove packing (5) from guide (1).

Remove guide (1) and packing (6) from knob assembly (2).

Using screwdriver, remove four screws and adapter.

Using screwdriver, pry guide (1) out from inside body assembly (7).

END OF TASK


TM 9-1240-380-34

5-19. ELEVATION KNOB ASSEMBLY REMOVAL (CONT)

Para 5-19 Cont

Vol II 5 - 1 9

Para 5-20

5-20

TM 9-1240-380-34

5-20. ELEVATION KNOB ASSEMBLY INSTALLATION

TOOLS: # 1 cross tip screwdriver (Phillips type)

SUPPLIES: Grease (item 4, App. A)Sealing compound (item 7, App. A)

PERSONNEL: One

REFERENCES: JPG 41C for LubricatingUsing sealing compound


Procedure

NOTE

If adapter was removed, apply a small amount ofsealing compound to mating surfaces of adapter (JPG).Using screwdriver, install adapter to body with fourscrews.

Put a thin film of grease on surface

Install packing (1) on guide (3).

Install packing (1) and guide (3) in

Install packing (2) into guide (3).

of packings (1) and (2) (JPG).

body assembly (4).

Install boresight knob assembly (5) into body assembly (4) with index mark facingeyepiece.

Using screwdriver, install four washers (6) and four screws (7).

NOTE



END OF TASK

Vol II

TM 9-1240-380-34

5-20. ELEVATION KNOB ASSEMBLY INSTALLATION (CONT)

Vol II

Para 5-20 Cont

5 - 2 1

TM 9-1240-380-34




Removal 5 - 2 2Installation 5 - 2 3

5-22. VALVE STEM AND VALVE CORE REMOVAL

TOOLS: 3/8", 7/16" open end wrenchValve core wrench

PERSONNEL: One


FRAME 1

Procedure

Using 7/16” wrench, remove valve assembly (1) from body assembly (2).

Using 7/16” and 3/8” wrenches, remove cap (3) from valve stem (4).



END OF TASK

Para 5-215 - 2 2 Vol II

TM 9-1240-380-34

5-22. VALVE STEM AND VALVE CORE REMOVAL (CONT)

Vol IIPara 5-22 Cont

5-23

TM 9-1240380-34


TOOLS: 7/16”, 3/8” open end wrenchValve core wrench


PERSONNEL: One


EQUIPMENT CONDITION: Valve parts and body assembly on work bench

FRAME 1

Step Procedure

1 . Using valve core wrench, put valve core (1) in valve stem (2) and tighten.

2. Put strap (3) on valve stem (2) and cap (4).

3. Using 7/16” and 3/8” wrenches, put cap (4) on valve stem (2).4. Put sealing compound on threads of valve stem (2) (JPG).

5. Using 7/16” wrench, put valve (5) in body assembly (6) and tighten.

NOTE



END OF TASK

Para 5-235 - 2 4 Vol II

TM 9-1240-380-34

5-23. VALVE STEM AND VALVE CORE INSTALLATION (CONT)

Para 5-23 Cont

Vol II 5 - 2 5

TM 9-1240-380-34

Section 9. EYEPIECE ASSEMBLY

5-24. EYEPIECE ASSEMBLY MAINTENANCE PROCEDURES INDEX

Tank Reference (para)

Disassembly 5-25Assembly 5-26

5-25. EYEPIECE ASSEMBLY DISASSEMBLY

TOOLS: 0.070” flat tip jewelers screwdriver


PERSONNEL: One



Procedure

Using screwdriver, remove two setscrews (1) and index (2).

Using screwdriver, remove three setscrews (3) and scale (4).

Using screwdriver, remove setscrew (5) from ring (6).

Using your hand, unscrew ring (6) from adapter (7).

Using cleaning solvent, remove old sealing compound from threads of setscrew (5) andring (6).

Using your hand, unscrew adapter (7) from eyepiece assembly housing (8).

GO TO FRAME 2

Para 5-245 - 2 6 Vol II

TM 9-1240-380-34

5-25. EYEPIECE ASSEMBLY DISASSEMBLY (CONT)

Para 5-25 Cont

Vol II 5-27/(5-28 blank)

TM 9-1240-380-34

5-25. EYEPIECE ASSEMBLY DISASSEMBLY (CONT)

FRAME 2

Step

1.

2.

3.

Procedure

Using screwdriver, pry stop (1) from eyepiece assembly housing (2). (Location of stopmay vary around eyepiece assembly. )

Carefully

Take care when handling and removing cell(3).

pull cell assembly (3) from eyepiece housing (2).

Remove packing (4) from eyepiece assembly housing (2).

END OF TASK

Para 5-25 Cont

Vol II 5 - 2 9

TM 9-1240-380-34

5-26. EYEPIECE ASSEMBLY ASSEMBLY

TEST EQUIPMENT: Dioptometer

TOOLS: 0.070” flat tip jewelers screwdriver

SUPPLIES: Grease (item 4, App. A)Cleaning compound (item 2, App. A)Sealing compound (item 8, App. A)S o a p

P E R S O N N E L : O n e

REFERENCES: JPG 41C for CleaningLubricatingSealing lenses

Using dioptometerConnecting power supply


Procedure

Check packing (1) for wear or cracks. Clean in warm water with a mild soap. Dry(JBG).


Using cleaning compound, clean lens of cell assembly (2) (JPG).

Install packing (1) into groove of housing (3).

Install cell assembly (2) into housing (3). Make sure slot in cell (2) is in line with holefor stop (4) in housing (3).

Using your hand, press stop (4) into eyepiece assembly housing (3).

GO TO FRAME 2

Para 5-265 - 3 0 Vol II

TM 9-1240-380-34

5-26. EYEPIECE ASSEMBLY ASSEMBLY (CONT)

Para 5-26 Cont

Vol II 5-31/5-32 blank)

TM 9-1240-380-34


FRAME 2

Step Procedure

1. Install adapter (1) onto eyepiece assembly housing (2).

2. Using your hand, install ring (3) on eyepiece assembly housing (2).

3. Put a small drop of sealing compound on setscrew (4).

4. Using screwdriver, install setscrew (4).

5. Install scale (5). Using screwdriver, install three setscrews (6).

6. Install index (7). Using screwdriver, install two setscrews (8).

GO TO FRAME 3

Para 5-26 Cont

Vol II 5 - 3 3

TM 9-1240-380-34


FRAME 3

Procedure

Using Jewelers screwdriver, loosen two setscrews (1) on eyepiece assembly (2).

Turn index (3) until index mark (4) is centered in up position.

Using jewelers screwdriver, tighten two setscrews (1).

Place doptometer onto eye lens (5) and while looking through dioptometer, turn knurledknob (6) until reticle (7) is sharp and clear (JPG).

Remove dioptometer from eyepiece assembly (2).

Using jewelers

Turn scale (9)

Using jewelers

screwdriver, loosen three setscrews (8).

until zero is centered on

screwdriver, tighten three

index mark (4).

setscrews (8).

NOTE



END OF TASK

Para 5-26 Cont

5 - 3 4 Vol II

TM 9-1240-380-34


Para 5-26 Cont

Vol II 5 - 3 5

6-0

TM 9-1240-380-34

Vol II

T M 9 - 1 2 4 0 - 3 8 0 - 3 4

CHAPTER 6

INFRARED BODY ASSEMBLY (M36) MAINTENANCE PROCEDURES

Section 1. GENERAL

6-1. SCOPE

This chapter gives maintenance procedures for the infrared body assembly.

6-2. LIST OF INFRARED BODY ASSEMBLY ITEMS CONTAINED IN THISCHAPTER

High voltage. Make sure that rotarybefore doing any repair.

switch is set to OFF

Do not work on infrared body assembly in bright sunlight.Bright light and strong magnetic fields make the imageconverter tube work badly and may damage it if it is inbright light for a long time.


Cell Assembly 1 6-3Plunger, Spring, Retaining Ring and Key 2 6-6Eyepiece Assembly Scale 3 6-9Cap Assembly Electron Tube and Collar 4 6-12Cap Assembly, Converter and Power Supply 5 6-15Protective Plug, Clamp, Wire, Sleeve Assembly, 6 6-18

Contact (Electrical), and ConnectorSwitch 7 6-21Valve Stem and Valve Core 8 6-24Latch 9 6-27Contact (Electrical) 10 6-30Lampholder and Packing 11 6-33Boresight Knob Assembly and Related Parts 12 6-36

Vol I I

Para 6-16-1

TM 9-1240-380-34

Section 2. CELL ASSEMBLY

6-3 . CELL ASSEMBLY MAINTENANCE PROCEDURES INDEX



6-4. CELL ASSEMBLY REMOVAL


TOOLS: 5/64” and 3/16“ socket head screw key (Allen wrench orequivalent)8” adjustable wrench


PERSONNEL: One


1 . Using 5/64” Allen wrench, remove setscrew (1).

2 . Using cleaning solvent, remove old sealing compound from threads of setscrew (1).

3. Using 3/16” Allen wrench, remove four screws (2), four washers (3), cell assembly (4)and packing (5).

4. Using adjustable wrench, remove tube (6) and packing (7) from housing assembly (8).

END OF TASK

Para 6-3

6 - 2 Vol II

TM 9-1240-380-34

6-4. CELL ASSEMBLY REMOVAL (CONT)

Para 6-4 Cont

Vol II 6 - 3

TM 9-1240-380-34

6 - 5 . CELL ASSEMBLY INSTALLATION


TOOLS: 5/64”, 3/ 16” socket head screw key (Allen wrench or equivalent )8” adjustable wrench

SUPPLIES: Grease (item 4, App. A)Sealing compound (item 8, App. A)

PERSONNEL: One

REFERENCES: JPG 4lC for SealingLubricating


Procedure


Using adjustable wrench, install packing (1) and tube (2) in housing assembly (3).Put a thin film of grease on surface of packing (4) (JPG),

Place packing (4) on cell assembly (5).

While holding cell assembly (5) in place, use 3/16” Allen wrench to install four washers(6) and four screws (7),

Put a thin film of sealing compound on threads of setscrew (8) (JPG).

Using 5/64’” Allen wrench, install setscrew (8) in cell assembly (5).

NOTE



END OF TASK


TM 9-1240-380-34

6-5. CELL ASSEMBLY INSTALLATION (CONT)

Para 6-5 ContVol II 6 - 5

TM 9-1240-380.34

Section 3. PLUNGER, SPRING, RETAINING RING, AND KEY

6-6. PLUNGER, SPRING, RETAINING RING, AND KEY MAINTENANCEPROCEDURES INDEX


RemovalInstallation

6-76-8

6 - 7 . PLUNGER, SPRING, RETAINING RING, AND KEY REMOVAL


TOOLS: ScriberTweezers3/ 16" flat tip screwdriver

PERSONNEL: One


FRAME 1

Procedure

Using scriber, push in and hold plunger (1). Using tweezers, remove retaining ring (2)from slot in plunger (1). Spring (3) will push plunger (1) part way through hole in key

While holding retaining ring (2) with tweezers, use fingers to pull plunger (1) from key

Remove spring (3).

Using screwdriver, remove two screws (5), and key (4), from infrared body assembly (6).

Using screwdriver, remove screw (7) from key (4) and bracket (8).

END OF TASK

Para 6-66 - 6 Vol I I

TM 9-1240-380-34

6-7. PLUNGER, SPRING, RETAINING RING, AND KEY REMOVAL (CONT)

Para 6-7 Cont

Vol II 6 - 7

TM 9-1240-380-34

6 - 8 . PLUNGER, SPRING, RETAINING RING, AND KEY INSTALLATION


TOOLS: ScriberTweezers3/16” flat tip screwdriver

PERSONNEL: One


Procedure

While holding bracket (1) in slot of key (2), use screwdriver to install screw (3).

While holding bracket (1) and key (2) on infrared body assembly (4), use screwdriver toinstall two screws (5).

Using your fingers, install spring (6) into key (2).

Push plunger (7) part way through hole in key (2) slot up.

Using tweezers, place retaining ring (8) over plunger (7).

Using scriber, press on plunger (7) and slide retaining ring (8) until it fits into groove ofplunger (7).

NOTE



END OF TASK


TM 9-1240-380-34

6-8. PLUNGER, SPRING, RETAINING RING, AND KEY INSTALLATION (CONT)

Para 6-8 Cont

Vol II 6 - 9

TM 9-1240-380-34

Section 4. EYEPIECE ASSEMBLY SCALE

6 - 9 . EYEPIECE ASSEMBLY SCALE MAINTENANCE PROCEDURES INDEX



6-10. EYEPIECE ASSEMBLY SCALE REMOVAL


TOOLS: 0.035'' socket head screw key (Allen wrench or equivalent)

Cleaning solvent (item 13, App. A)

PERSONNEL: One


FRAME 1

Step Procedure

1. Using Allen wrench, remove two setscrews (1) and index (2).

2. Using cleaning solvent, remove old sealing compound from threads of setscrew (1) andindex (2).

3. Using Allen wrench, remove three setscrews (3) and scale (4).

4. Using cleaning solvent, remove old sealing compound from setscrews (3) and scale (4).

END OF TASK

Para 6-96 - 1 0 Vol II

TM 9-1240-380-34

6-10. EYEPIECE ASSEMBLY SCALE REMOVAL (CONT)

Para 6-10 Cont

Vol II 6 - 1 1

TM 9-1240-380-34

6-11. EYEPIECE ASSEMBLY SCALE INSTALLATION

APPLICABLE CONFIGUREATIONS: M36

TEST EQUIPMENT: 0-36 VDC power supplyDioptometer

TOOLS: 0.035" socket head screw key (Allen wrench or equivalent)


PERSONNEL: One

REFERENCES: JPG 41C for SealingUsing dioptometerConnecting power supply

EQUIPMENT CONDITION: Infrared body assembly and eyepiece parts on work bench, power off

Procedure

Install scale (1) on eyepiece assembly (2).

2. Apply a thin film of sealing compound to threads of

3. Using Allen wrench, install, but do not tighten, three

five setscrews

setscrews (3).

4 , Install index (5) on eyepiece assembly (2).

5. Using Allen wrench, install, but do not tighten, two setscrews (4).

GO TO FRAME 2

(3, 4) (JPG).

Para 6-116 - 1 2 Vol II

TM 9-1240-380-34

6-11. EYEPIECE ASSEMBLY SCALE INSTALLATION (CONT)

Para 6-11 Cont

Vol II 6 - 1 3

TM 9-1240-380-34


Procedure

Using your hand, turn green ring (1) on the eyepiece assembly (2) to center of its range.

Turn index (3) until index mark (4) is centered in up position.

Using Allen wrench, tighten two setscrews (5).

Connect power supply (Vol I, Para 2-4) to infrared body assembly (6). Set voltage to24 VDC. Turn rotary switch (7) to 24V ON!

Place dioptometer onto eye lens (8) and while looking through dioptometer, turn knurledknob (9) until reticle (10) is sharp and clear, (JPG).

Turn scale (11) until zero is centered on index mark (4).

Using Allen wrench, tighten three setscrews (12).

Remove dioptometer from eye lens (8).

Set rotary switch (7) to OFF.

Set voltage to 0 VDC. Disconnect power supply (JPG).

NOTE



END OF TASK

Para 6-116 - 1 4 Vol II

TM 9-1240-380-34


Para 6-11 Cont

Vol II 6 - 1 5

Para 6-12

6-16

TM 9-1240-380-34

Section 5. CAP ASSEMBLY, ELECTRON TUBE AND COLLAR

6-12. CAP ASSEMBLY, ELECTRON TUBE AND COLLAR MAINTENANCEPROCEDURES INDEX



6 - 1 3 . CAP ASSEMBLY, ELECTRON TUBE AND COLLAR REMOVAL


TOOLS: 1/16” socket head screw key (Allen wrench or equivalent )


PERSONNEL: One



.

Step Procedure

1.

2.

3.

4 .

5.

Remove cap assembly (1) and gasket (2) (para 6-16).

UsingUsing

Allen wrench, remove two setscrews (3).

cleaning solvent, remove old sealing compound from threads of setscrew (3).

Do not expose electron tube (5) to sunlight.

your hand, turn eyepiece assembly (4) counterclockwise. Remove eyepiece assemblyUsing(4), electron tube (5), and- collar (6).

Remove collar (6) from electron tube (5).

END OF TASK

Vol II

TM 9-1240-380-34

6-13. CAP ASSEMBLY, ELECTRON TUBE AND COLLAR REMOVAL (CONT)

Para 6-13 Cont

Vol II 6 - 1 7

TM 9-1240-380-34

6-14. CAP ASSEMBLY, ELECTRON TUBE AND COLLAR INSTALLATION


‘TEST EQUIPMENT: Dioptometer0-36 VDC power supply

TOOLS: 0.035" and 1/16" socket head screw key (Allen wrench or equivalent)

SUPPLIES: Sealing compound ( item 8, App. A)

PERSONNEL: One

REFERENCES: JPG 41C for SealingUsing dioptometerConnecting power supply


Procedure

Do not expose electron tube (1)collar (2) on electron tube (1).

NOTE

Silvered end of electron tube must be

Install electron tube (1) in infrared body assembly

to sunlight. Install

installed first.

(3).

Line up single guide pin in eyepiece assembly (4) with single slot in infrared body assembly(3).

While holding infrared body assembly, push in on eyepiece assembly (4) and turnclockwise.

Put a small amount of sealing compound on the threads of two setscrews

Using 1/16" Allen wrench, install two setscrews (5).

Install cap assembly (6) and gasket (7) (para 6-17, steps 10 and 11).

GO TO FRAME 2

(5).

Para 6-14 Cont6 - 1 8 Vol II

TM 9-1240-380-34

6-14. CAP ASSEMBLY, ELECTRON TUBE AND COLLAR INSTALLATION (CONT)

Para 6-14

Vol II 6 - 1 9

TM 9-1240-380-34


Procedure

Using your hand, turn green ring (1) on the eyepiece assembly (2) to center of its range.

Using 0.035"’ Allen wrench, loosen two setscrews (3) and turn index (4) until index mark(5) is centered in up position.


Connect power supply (Vol I, Para 2-4) to infrared body assembly (6). Set voltage to24 VDC. Turn rotary seitch (7) to '24V ON'.

Place dioptometer onto eye lens (8) and while looking through dioptometer, turn knurledknob (9) until reticle (10) is sharp and clear (JPG).

Using Allen wrench, loosen three setscrews (11).

Turn scale (12) until zero is centered on index mark (5).

Using 0.035” Allen wrench, tighten three setscrews (11).

Remove dioptometer from eye lens (8).

Set rotary switch (7) to OFF.

Set voltage to 0 VDC. Disconnect power supply (JPG).

NOTE



END OF TASK


TM 9-1240-380-34


Para 6-14 Cont

Vol II 6 - 2 1

6-15.

TM 9-1240-380-34

Section 6. CAP ASSEMBLY, CONVERTER, AND POWER SUPPLY

CAP ASSEMBLY, CONVERTER, AND POWER SUPPLY MAINTENANCEPROCEDURES INDEX


Removal and Disassembly 6-16Assembly and Installation 6-17

6 - 1 6 . CAP ASSEMBLY, CONVERTER, AND POWER SUPPLY REMOVAL ANDDISASSEMBLY

APPLICABLE CONFIGURATIONS: M36TOOLS: Soldering iron

1-5/8 “ tubular spanner wrench1/1 6 “socket head screw key (Allen wrench or equivalent)

P E R S O N N E L : O n eREFERENCES: JPG 41C for unsoldering wiresEQUIPMENT CONDITION: Infrared body assembly on work bench, power offPRELIMINARY PROCEDURES: Remove rotary switch (para 6-22, steps 2, 3 and caution)

Procedure

Using your hand, turn cap assembly (1) counterclockwise and remove gasket (2).

NOTE

Either battery or converter may be installed. Both areremoved in the same way.

Remove battery or converter (3) from sleeve assembly (4).

Push in and turn sleeve assembly (4) counterclockwise and remove from housing.

Turn sleeve (5) slightly clockwise and remove from power supply (6). Remove springtension washer (7).

Using spanner wrench, remove externally threaded ring (8).

Using Allen wrench, remove two setscrews (9).

Using soldering iron, unsolder red and white wire leads from rotary switch (10)6-22) (JPG).

Remove insulator (11).

END OF TASK

(para

Para 6-156 - 2 2 Vol II

TM 9-1240-380-34

6-16. CAP ASSEMBLY, CONVERTER, AND POWER SUPPLY REMOVAL ANDDISASSEMBLY (CONT)


TM 9-1240-380-34

6-17. CAP ASSEMBLY, CONVERTER, AND POWER SUPPLY ASSEMBLY ANDINSTALLATION


TOOLS: Soldering iron1-5/8” tubular spanner wrench1/ 16” socket head screw key (Allen wrench or equivalent)

SUPPLIES : Sealing compound (item 8, App. A)Solder (item 12, App. A)Tubing (item 15, App. A)

PERSONNEL: One

REFERENCES: JPG 41C for: SealingSoldering


NOTE

Do not install battery during assembly.

Install insulator (1) with setscrew slot on top and aligned with setscrew hole.

Put a small amount of sealing compound on threads of two setscrews (2) (JPG).

Install insulator (1). Using Allen wrench, install two setscrews (2).

Using soldering iron and solder, solder red and white wire leads to rotary switch (3)6-23) (JPG).

Using spanner wrench, install externally threaded ring (4).

Place spring tension washer (5) on end of power supply (6).

Install sleeve (7) on power supply (6) by twisting clockwise.

Place sleeve assembly (8) in infrared body assembly (9) and lock in place by turningclockwise.

Install converter (10) in sleeve assembly (9). Make sure small contact points out.

Place gasket (11) on cap assembly (

Using your hand, turn cap assemblyassembly (9).

12).

(12) and gasket (11) clockwise into infrared body

Para 6-176 - 2 4 Vol II

TM 9-1240-380-34

6-17. CAP ASSEMBLY, CONVERTER, AND POWER SUPPLY ASSEMBLY ANDINSTALLATION (CONT)

Step Procedure

NOTE


Install rotary switch (para 6-23).Do checkout procedure (Vol I, para 2-47).

END OF TASK

Vol II

Para 6-17 Cont6-25/(6-26 blank)

TM 9-1240-380-34

Section 7. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT(ELECTRICAL), AND CONNECTOR

6-18. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT(ELECTRICAL), AND CONNECTOR MAINTENANCE PROCEDURES INDEX



6-19. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT(ELECTRICAL), AND CONNECTOR REMOVAL


TOOLS: 5/64”, 3/16”, 1/8”, and 1/16” socket head screw key (Allenwrench or equivalent)0.187” spanner wrenchTweezersWooden dowel (1” x 6“)Soldering iron5/16”, 3/16”, and 1/4” flat tip screwdriver5/ 16” offset screwdriverSoft face hammer

SUPPLIES: Crocus cloth

PERSONNEL: One

REFERENCES: JPG 4lC for: CleaningUnsoldering wires


PRELIMINARY PROCEDURES: Remove cap assembly, converter and power supply (para 6-16)Remove electron tube, eyepiece assembly, and collar (para 6-13)

Para 6-18

6 - 2 7

TM 9-1240-380-34

6-19. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT(ELECTRICAL), AND CONNECTOR REMOVAL (CONT)

FRAME 1

Procedure

Using 5/64” Allen wrench, remove setscrew (1).

Using 3/16“ Allen wrench, remove four screws (2), four washers (3), cell assembly (4),and packing (5) from elbow assembly (6).

Using 5/16“ flat tip screwdriver and 5/ 16“ offset screwdriver, remove four screws (7)and four washers (8).

Be careful not toassembly.

break wire connection to elbow

Carefully pull housing assembly (9) away from elbow assembly (6).

Using 1/16“ Allen wrench, remove two setscrews (10).

Using 1/8” Allen wrench, remove setscrew (11) from elbow assembly (6).GO TO FRAME 2

Para 6-19 Cont

6 - 2 3

TM 9-1240-380-34


Para 6-19 Cont

Vol II 6 - 2 9

TM 9-1240-380-34


FRAME 2

Step Procedure

Using

Using

Using

using(1).

Using

Using

Usingassembly (7).

Check connector (9) for corrosion, If corroded, clean with crocus cloth (JPG).

END OF TASK

Be careful not to damage mirror (1). Do not getfingerprints or smears on mirror (1) surfaces.

3/16” flat tip screwdriver, remove two screws (2) and two clamps (3).

tweezers, pull contact (4) and wire (5) from sleeve assembly (6).

soldering iron, unsolder wire (5) from contact (4) (JPG).

tweezers, pull wire (5) back through sleeve assembly (6) and from around mirror

your hand, unscrew sleeve assembly (6) from elbow assembly (7).

spanner wrench, remove protective plug (8).

wooden dowel and hammer. push out connector (9) and wire (5) from elbow


TM 9-1240-380-34


Para 6-19 Cont

Vol II 6 - 3 1 / ( 6 - 3 2 b l a n k

6-20. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY,(ELECTRICAL), AND CONNECTOR INSTALLATION


TM 9-1240-380-34

CONTACT

TOOLS: 1/8”, 1/16”, 3/16”, 5/64” socket head screw key (Allen wrenchor equivalent)3/16”, 1/4”, 5/16” flat tip screwdriver5/16” offset screwdriver1 /4” drift pin4 oz ball peen hammerSoldering iron0.187” spanner wrench

SUPPLIES: Solder (item 12, App. A)Sealing compound (item 8, App. A)Grease (item 4, App. A)Tubing (item 15, App. A)

PERSONNEL: One

REFERENCES: JPG 4lC for LubricatingSealingSoldering wires


Vol II

Para 6-20

6 - 3 3

TM 9-1240-380-34

6-20. PROTECTIVE PLUG,(ELECTRICAL), AND

CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACTCONNECTOR INSTALLATION (CONT)

FRAME 1

Step

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

Procedure

Thread wire (1) through holes in elbow assembly (2).

Using drift pin and hammer, install connector (3) in elbow assembly (2) and align holein connector with setscrew hole.

Using 1/16” Allen wrench, install two setscrews (4) in elbow assembly (2) to fastenconnector (3).

Put sealing compound on all surfaces of plug (5) (JPG).

Using

Using

Using

Using

Usingraised

Usingseated.

spanner wrench, install plug (5).

Be careful not to damage mirror (6). Do not getfingerprints or smears on mirror surfaces.

tweezers, thread wire (1) behind mirror (6).

your hand, screw sleeve assembly (7) onto elbow assembly (2).

tweezers, thread wire (1) through sleeve assembly (7).

soldering ironportion facing

tweezers, pull

Using 3/16" flat tipscrews (10).

GO TO FRAME 2

and solder, solder wire (1) to contact (8) (JPG) with slots andout.

wire (1) back through sleeve assembly (7) until contact (8) is

screwdriver, hold down wire (1) with two clamps (9) and two

Para 6-20 C o n t

6 - 3 4 Vol II

TM 9-1240-380-34

6-20. PROTECTIVE PLUG, CLAMP, WIRE, SLEEVE ASSEMBLY, CONTACT(ELECTRICAL), AND CONNECTOR INSTALLATION (CONT)


TM 9-1240-380-34


FRAME 2

Step

1.

2.

3.

4.

5.

6.

7.

8.

9.

Procedure

Check that packing (1) is seated in groove. Check packing (1) for wear or cracks.Replace if damaged.


While holding housing assembly (2) in place, use 5/16“ flat tip screwdriver and 5/16“offset screwdriver to install four washers (3) and four screws (4).


Place packing (5) on cell assembly (6).

While holding cell assembly (6) in place, use 3/16" Allen wrench to install four washers(7) and four screws (8) in elbow assembly (9).

Put a thin film of sealing compound on threads of setscrew (10) (JPG).

Using 5/64” Allen wrench, install setscrew (10).

Using 1/8” Allen wrench, install setscrew (11) in elbow assembly (9).

NOTE


Assemble cap assembly, converter, and power supply(para 6- 17).Install cap assembly, electron tube and collar (para6-14).Do checkout procedure ( Vol I, para 2-4).

END OF TASK

Para 6-20 Cont

6 - 3 6 Vol II

TM 9-1240-380-34


Vol II

Para 6-20 Cont

6-37/(6-38 blank)

TM 9-1240-380-34

Section 8. SWITCH

6-21. SWITCH MAINTENANCE PROCEDURES INDEX



6-22. SWITCH REMOVAL


TOOLS: 12” blade screwstarter1/4” flat tip screwdriver.050” socket head screw key (Allen wrench or equivalent)Soldering iron3/8” open end wrenchTweezers

PERSONNEL: One

REFERENCES: JPG 4lC for Tagging wiresUnsoldering wires


PRELIMINARY PROCEDURES: Remove cap assembly, converter, and power supply (para 6-16,steps 1, 2 and 3)

Vol IIPara 6-21

6 - 3 9

TM 9-1240-380-34

6-22. SWITCH REMOVAL (CONT)

FRAME 1

Step Procedure

1. Using Allen wrench, remove setscrews (1) from knob (2). Remove knob (2).

2.

3.

4.

5.

6.

7 .

Using screwdriver, remove

Using screwdriver, remove

Be careful

three screws (3) and three washers (4).

one screw (5) and one washer (6).

when removing rotary switch becauseterminals are very small and break easily.

Using wrench, remove nut (7) and washer (8). Remove plate (9) and “O” ring (10)from switch (11).

Tag four wires connected to terminals of rotary switch (11) (JPG).

Using soldering iron, holding wire with tweezers, unsolder four wires connected toterminals of rotary switch (11) (JPG). Remove rotary switch (11).

Using screwstarter and tweezers, remove screw (12), washer (13), lug terminal (14), andspring tension clip (15).END OF TASK

Para 6-22 Cont

6 - 4 0 Vol II

TM 9-1240-380-34

6-22. SWITCH REMOVAL (CONT)

Vol II

Para 6-22 Cont

6 - 4 1

TM 9-1240-380-34

6-23. SWITCH INSTALLATION


TOOLS: 1/4” flat tip screwdriver.050” socket head screw key (Allen wrench or equivalent)12” blade screwstarter 3/8” open end wrenchTweezers

SUPPLIES: Solder (item 12, App. A)Sealing compound (item 8, App. A)Tubing (item 15, App. A)

REFERENCES: JPG 4lC for Putting on compoundSoldering wires


FRAME 1

Step

1.

2.

3.

4.

5.

6.

7.

8.

9.

Procedure

Install washer (1), lug terminal (2), and spring tension clip (3) on screw (4).

Using screwstarter, carefully install screw (4) through rotary switch housing of infraredbody assembly (5).

Using soldering iron, solder four wires to terminals of rotary switch (6) tagged duringremoval procedure.

Be careful when installing rotary switch becauseterminals are very small and break easily.

Install “O” ring (7) onto rotary switch (6).Place plate (8) on rotary switch (6). Using wrench, install washer (9) and nut (10).

Put a small amount of sealing compound on threads of four screws (11 and 12) (JPG).

While holding plate (8) in place, using screwdriver, install three screws (11) and threewashers (13).

Using screwdriver, install one screw (12) and one washer ( 14).

Install knob (15) on rotary switch (6).

Para 6-23

6 - 4 2 Vol II

TM 9-1240-380-34

6-23. SWITCH INSTALLATION (CONT)

Step Procedure

10. Put a small amount of sealing compound on threads of setscrews (16) in knob (15)(JPG). Using Allen wrench, install setscrews (16) into knob (15).

NOTE


Install cap assembly, converter, and power supplyassembly (para 6-17, steps 8, 9, and 11).Do checkout procedure ( Vol I, para 2-4).

END OF TASK


TM 9-1240-380-34




Removal 6-25Assembly 6-26



TOOLS: 3/8" and 7/ 16" open end wrenchValve core wrench

SUPPLIES: Cleaning solvent (item 13, App. A)Cloth (item 3, App. A)

PERSONNEL: One


EQUIPMENT CONDITION: Infrared body assembly on work, bench

Step

1.

2.

3.

4.

5.

Procedure

Using 7/16” wrench, remove valve (1) from infrared body assembly (2).




Using cleaning solvent, remove old sealing compound from threads of valve stem (4).

END OF TASK

Para 6-24

6 - 4 4 Vol II

TM 9-1240-380-34


Para 6-25 Cont

Vol II 6-45

TM 9-1240-380-34





PERSONNEL: One

REFERENCES: JPG 4lC for sealing

EQUIPMENT CONDITION: Valve parts and head assembly on work bench

Step

1.

2.

3.

4.

5.

Procedure

Using valve core wrench, put valve core (1) in valve stem (2) and tighten.

Put strap (3) on valve stem (2) and cap (4).

Using 7/16” and 3/8” wrenches, put cap (4) on valve stem (2).

Put sealing compound on threads of valve stem (2) (JPG).

Using 7/16" wrench, put valve (5) in infrared body assembly (6) and tighten.

NOTE



END OF TASK

Para 6-26

6 - 4 6 Vol II

TM 9-1240-380-34


Para 6-26 Cont

Vol II 6 - 4 7

TM 9-1240-380-34

Section 10. LATCH




6-28. LATCH REMOVAL



PERSONNEL:

EQUIPMENT

One

CONDITION: Infrared bodyassembly on work bench

FRAME 1

Step Procedure

1. Using screwdriver, remove two screws (1), two washers (2), and latch (3) from infraredbody assembly (4).

END OF TASK

Para 6-27

6 - 4 8 Vol II

TM 9-1240-380-34




PERSONNEL: One


FRAME 1

Step Procedure

1. While holding latch (1) in place, use screwdriver to install two screws (2) and twowashers (3) into infrared body assembly (4).

NOTE



END OF TASK

Para 6-29

Vol II 6 - 4 9

TM 9-1240-380-34

Section 11. CONTACT (ELECTRICAL)

6-30. CONTACT (ELECTRICAL) MAINTENANCE PROCEDURES INDEX



6-31. CONTACT (ELECTRICAL) REMOVAL


TOOLS: .050” socket head screw key (Allen wrench or equivalent)Soldering iron

PERSONNEL: One

REFERENCES: JPG 4lC for Tagging wires

EQUIPMENT CONDITION:

Unsoldering wires

Infrared body assembly on work bench, power off

Step Procedure

1. Using Allen wrench, remove setscrew (1) from housing of infrared body assembly (2).

2. Lift electrical contact (3) from housing of infrared body assembly (2).

3. Tag two wires (4). Using soldering iron, unsolder two wires (4) from terminals ofelectrical contact (3) (JPG).

END OF TASK

Para 6-30

6 - 5 0 Vol II

TM 9-1240-380-34

6-31. CONTACT (ELECTRICAL) REMOVAL (CONT)

Para 6-31 Cont

Vol II 6 - 5 1

TM 9-1240-380-34

6-32. CONTACT (ELECTRICAL) INSTALLATION

TOOLS: Soldering iron.050" socket head screw key (Allen wrench or equivalent)

SUPPLIES: Solder (item 12, App. A)Sealing compound (item 8, App. A)Tubing (item 15, App. A)

PERSONNEL: One

REFERENCES: JPG 41C for SealingSoldering wires


FRAME 1

Procedure

1.

2.

3.

4.

Using soldering iron and solder, solder two wires (1), unsoldered during removal, toterminals of electrical contact (2) (JPG).

Put sealing compound on threads of setscrew (3) (JPG).

Place electrical contact (2) in housing of infrared body assembly (4).

Using Allen wrench, install setscrew (3) into housing of infrared body assembly (4).

NOTE



END OF TASK

Para 6-32

6 - 5 2 Vol II

TM 9-1240-380-34

6-32. CONTACT (ELECTRICAL) INSTALLATION (CONT)

Para 6-32 Cont

Vol II 6 - 5 3

TM 9-1240-380-34

Section 12. LAMPHOLDER AND PACKING

6-33. LAMPHOLDER AND PACKING MAINTENANCE PROCEDURES INDEX



6-34. LAMPHOLDER AND PACKING REMOVAL

APPLICABLE CONFIGURATIONS:


PERSONNEL: One

M36


FRAME 1

Step Procedure

1.

2.

3.

4.

Remove lampholder (1) from infrared body assembly (2) by pressing in and turningclockwise.

Remove lamp (3) from lampholder (1) by pushing in while, turning counterclockwise.

Remove packing (4).

Using screwdriver, remove screw (5), washer (6), and cord (7) from infraredbody assembly (2).

END OF TASK

Para 6-33

6 - 5 4 Vol II

TM 9-1240-380-34

6-34. LAMPHOLDER AND PACKING REMOVAL (CONT)

Para 6-34 Cont

Vol II 6 - 5 5

TM 9-1240-380-34

6-35. LAMPHOLDER AND PACKING INSTALLATION



PERSONNEL: One



FRAME 1

Step Procedure

1 .

2.

3.

4.

5.

6.

Put washer (1) and screw (2) through loop (3) in cord of lampholder (4).

Using screwdriver, install screw (2) and washer (1) in cover (5) of infrared bodyassembly (6).


Place packing (7) on lampholder (4).

Install lamp (8) in lampholder (4) by pressing in while turning clockwise.

Install lampholder (4) into cover (5) of infrared body assembly (6) by pressing in whileturning counterclockwise.

NOTE


Do checkout procedure (Vol I, para 2-4).

END OF TASK

Para 6-35

6 - 5 6 Vol II

TM 9-1240-380-34

6-35. LAMPHOLDER AND PACKING INSTALLATION (CONT)

Para 6-35 Cont

V o l I I 6 - 5 7

TM 9-1240-380-34

Section 13. BORESIGHT KNOB ASSEMBLY

6-36. BORESIGHT KNOB ASSEMBLY MAINTENANCE PROCEDURES INDEX



6-37. BORESIGHT KNOB ASSEMBLY REMOVAL


TOOLS: 1/4” flat tip screwdriverJewelers screwdriver

PERSONNEL: One


FRAME 1

Step Procedure

1.

2.

NOTE

Maintenance procedures for both boresight knobassemblies are the same.

Using 1/4” flat tip screwdriver, remove four screws (1), four washers (2), and boresightknob assembly (3) from infrared body assembly (4).

Using jewelers screwdriver, remove packing (5) from boresight knob assembly (3).

END OF TASK

Para 6-36

6 - 5 8 Vol II

TM 9-1240-380-34

6-37. BORESIGHT KNOB ASSEMBLY REMOVAL (CONT)

Para 6-37 Cont

Vol II 6 - 5 9

TM 9-1240-380-34

6-38. BORESIGHT KNOB ASSEMBLY INSTALLATION




PERSONNEL: One

REFERENCES: JPG 4lC for lubricating


Step

1.

2.

3.

4.

Procedure

Para 6-38

6 - 6 0

NOTE

Maintenance procedures for both boresight assembliesare the same.


Place packing (1) on boresight knob assembly (2).

Install boresight knob assembly (2) into infrared body assembly (3) with index markfacing eyepiece.


NOTE



END OF TASK

Vol II

TM 9-1240-380-34

6-38. BORESIGHT KNOB ASSEMBLY INSTALLATION (CONT)

Para 6-38 Cont

Vol II 6 - 6 1

TM 9-1240-380-34

7-0 Vol II

TM 9-1240-380-34

CHAPTER 7

ELBOW ASSEMBLY (M36E1) MAINTENANCE PROCEDURES

Section 1. GENERAL

7-1. SCOPE

This chapter gives maintenance procedures for the elbow assembly.

7-2.

Makepower

sure that the elbow assembly isbefore doing any maintenance.

disconnected from

LIST OF ELBOW ASSEMBLY ITEMS CONTAINED IN THIS CHAPTER


Plunger, Strike and Key 1 7-3Image Intensifier Assembly and Eyepiece Assembly Packing 2 7-6Regulator Assembly 3 7-11Switch Assembly 4 7-14Valve Stem and Valve Core 5 7-17Latch 6 7-20Lampholder and Packing 7 7-23Boresight Knobs Assembly 8 7-26

Para 7-1

Vol II 7-1

Section 2. PLUNGER, STRIKE AND KEY

TM 9-1240-380-34

7-3. PLUNGER, STRIKE AND KEY MAINTENANCE PROCEDURES INDEX



7-4. PLUNGER, STRIKE AND KEY REMOVAL


TOOLS: ScriberTweezers# 1 cross tip screwdriver ( Phillips type)

PERSONNEL: One


FRAME 1

Step

1.

2.

3.

4.

5.

Para 7-3

Procedure

Plunger (1) is spring loaded. Use care when removingretaining ring (2).

Using scriber, press in and hold plunger (1). Using tweezers, remove retaining ring (2)from groove in plunger (1). Spring (3) will push plunger (1) part way through hole inkey (4).

While holding retaining ring (2) with tweezers, use fingers to pull plunger (1) from key(4).

Remove spring (3).

Using screwdriver, remove two screws (5), key (4).

Using screwdriver, remove screw (6) from key (4) and strike (7).

END OF TASK

7 - 2 Vol II

TM 9-1240-380-34

7-4. PLUNGER, STRIKE AND KEY REMOVAL (CONT)

Para 7-4 Cont

Vol II 7 - 3

TM 9-1240-380-34

7-5. PLUNGER, STRIKE AND KEY INSTALLATION


TOOLS: ScriberTweezers#1 cross tip screwdriver ( Phillips type)

PERSONNEL: One

EQUIPMENT CONDITION: Elbow assembly, plunger, strike and key and associated parts on workbench

FRAME 1

Step

1.

2.

3.

4.

5.

6.

Procedure

While holding strike (1) in slot of key (2), use screwdriver to install screw (3).

While holding strike (1) and key (2) on elbow assembly (4), use screwdriver to installtwo screws (5).

Using your fingers, install spring (6) into key (2).

Push plunger (7) part way through

Using tweezers, place retaining ring

Using scriber, press on plunger (7)plunger (7).

hole in key (2), groove up.

(8) over plunger (7).

and slide retaining ring (8) until it fits into groove of

NOTE



END OF TASK

Para 7-5

7 - 4 Vol II

TM 9-1240-380-34

7-5. PLUNGER, STRIKE AND KEY INSTALLATION (CONT)

Para 7-5 Cont

Vol II 7 - 5 / ( 7 - 6 b l a n k )

TM 9-1240-380-34

Section 3. IMAGE INTENSIFIER ASSEMBLY AND EYEPIECE ASSEMBLY PACKING

7-6. IMAGE INTENSIFIER TUBE ASSEMBLY AND EYEPIECE ASSEMBLYPACKING MAINTENANCE PROCEDURES INDEX


Image Intensifier Assembly Removal 7-7Eyepiece Assembly Packing Removal 7-8Eyepiece Assembly Packing Installation 7-9Image Intensifier Assembly Installation 7-10

7-7. IMAGE INTENSIFIER ASSEMBLY REMOVAL


TOOLS: .050” socket head screw key (Allen wrench or equivalent)Fabricated extractor tool (App. C)

PERSONNEL: One

EQUIPMENT CONDITION: Elbow assembly on work bench, power off

Vol II

Para 7-6

7 - 7

TM 9-1240-380-34

7-7. IMAGE INTENSIFIER ASSEMBLY REMOVAL (CONT)

FRAME 1

Step

1 .

2.

3.

4.

5.

Procedure

Using wrench, loosen two setscrews (1) in eyepiece assembly (2).

Turn eyepiece assembly (2) counterclockwise and remove it from adapter assembly (3).

Screw fabricated extractor tool (4) clockwise onto the threads of the image intensifiertube (5) as far as it will go.

Gently pull tool (4) to remove image intensifier tube (5) from the connector (6) insidethe adapter assembly (3).

Unscrew extractor tool (4) from image intensifier tube (5).

END OF TASK

Para 7-7 Cont

7 - 8 Vol II

TM 9-1240-380-34

7-8. EYEPIECE ASSEMBLY


TOOLS: .050” socket head screw key

PERSONNEL: One

EQUIPMENT CONDITION: Elbow

PACKING REMOVAL

M36E1

(Allen wrench or equivalent)

assembly on work bench, power off

PRELIMINARY PROCEDURES: Remove eyepiece from elbow assembly ( para 7-7, steps 1 and 2only)

FRAME 1

Step Procedure

1.

2.

3.

4.

Using Allen wrench, loosen two setscrews (1). Remove index ring (2).

Using Allen wrench, loosen three setscrews (3). Remove scale diopter (4).

Using Allen wrench, loosen two setscrews (5). Using fingers, turn plain round nut (6)counterclockwise and remove.

Using fingers, turn optical element cell (7) clockwise while holding adapter (8) with otherhand. When rear of cell (7) is clear of ring (9), remove packing (10).

END OF TASK

Para 7-8

Vol II 7 - 9

TM 9-1240-380-34

7-9. EYEPIECE ASSEMBLY


TOOLS: .050” socket head screw key

PACKING INSTALLATION

M36E1

(Allen wrench or equivalent)


PERSONNEL: One


EQUIPMENT CONDITION: Eyepiece assembly on work bench

I FRAME 1 IStep

1.

2.

3.

4.

5.

6.

7.

Para 7-97 - 1 0

Procedure


Install packing (1) in groove of optical element cell (2).

Using fingers, turn optical element cell (2) counterclockwise while holding adapter (3)with other hand. Turn cell (2) until it stops.

Using fingers, install plain round nut (4) into cell (2) until snug.


Install scale diopter (6) on adapter (3). Using Allen wrench, tighten three setscrews (7).

Install index ring (8) on cell (2). Using Allen wrench, tighten two setscrews (9).

NOTE


Install eyepiece assembly into elbow assembly (para7-10, steps 4, 5 and 6 only).Do checkout procedure ( Vol I, para 2-5).

END OF TASK

Vol II

TM 9-1240-380-34

7-9. EYEPIECE ASSEMBLY PACKING INSTALLATION (CONT)

Para 7-9 Cont

Vol II 7 - 1 1

TM 9-1240-380-34

7-10. IMAGE INTENSIFIER ASSEMBLY INSTALLATION


TOOLS: .050” socket head screw key (Allen wrench or equivalent)

SUPPLIES: Cleaning compound (item 2, App. A)

PERSONNEL: One

REFERENCES: JPG 41C for cleaning lensesTM 9-254 for cleaning lenses


FRAME 1

Step

1.

2.

3.

4.

5.

6.

Procedure

Clean lenses on both ends of image intensifier tube (1) (JPG) (TM 9-254).

Screw extractor tool (2) on the tube (1).

Line up the pins on the tube (1) with the connector (3), Push in on the tube (1) toplug in the connector (3) on the adapter assembly (4). Unscrew extractor tool.

Clean

Screw

Using

lenses of eyepiece assembly (5) (JPG).

the eyepiece assembly

Allen wrench, tighten

(5) onto the adapter assembly (4).

two setscrews (6).

NOTE



END OF TASK

Para 7-10

7 - 1 2 Vol II

TM 9-1240-380-34

7-10. IMAGE INTENSIFIER ASSEMBLY INSTALLATION (CONT)


7-14

Para 7-11

TM 9-1240-380-34

Section 4. REGULATOR ASSEMBLY

7-11. REGULATOR ASSEMBLY MAINTENANCE PROCEDURES INDEX


RemovalInstallation

7-127-13

7-12. REGULATOR ASSEMBLY REMOVAL



PERSONNEL: One


FRAME 1

Step Procedure

Using screwdriver, remove four screws (1) from regulator assembly (2).

Pull out regulator assembly (2) far enough to reach connector (3) connected to aconnector on the horizontal circuit board (4).

Disconnect connector (3) and remove regulator assembly (2).

Remove gasket (5).

END OF TASK

Vol II

TM 9-1240-380-34

7-12. REGULATOR ASSEMBLY REMOVAL (CONT)

Para 7-12 Cont7-15

Vol II

Para 7-13

7-16

TM 9-1240-380-34

7-13. REGULATOR ASSEMBLY INSTALLATION

APPLICABLE CONFIGURATIONS: M36E 1


PERSONNEL: One


Procedure

Put gasket (1) around inside rim of regulator assembly cover plate (2).

Through gasket (1), connect connector (3) to P1 (4) on the horizontal circuit board (5)of the regulator assembly (6).

Put regulator assembly (6) on locator pin (7). Line up holes with gasket (1) and elbowassembly housing (8). Using screwdriver, install four screws (9).

NOTE



END OF TASK

Vol II

TM 9-1240-380-34

7-13. REGULATOR ASSEMBLY INSTALLATION (CONT)

Para 7-13 Cont

Vol II 7 - 1 7

TM 9-1240-380-34

Section 5. SWITCH ASSEMBLY

7-14. SWITCH ASSEMBLY MAINTENANCE PROCEDURES INDEX



7-15. SWITCH ASSEMBLY REMOVAL


TOOLS: # 1 cross tip screwdriver ( Phillips type)Soldering ironLong round nose pliers

PERSONNEL: One

REFERENCES: JPG 41C for: Tagging wiresUnsoldering wires


PRELIMINARY PROCEDURES: Remove regulator assembly ( para 7-10 )

FRAME 1

step Procedure

1. Using screwdriver, remove screw ( 1), clamp (2) and terminal (3) and terminal (4).Reinstall terminal (3), clamp (2) and screw (1).

2 . Using screwdriver, remove four screws (5) and four lockwashers (6).

3. Pull out switch assembly (7) far enough to work without straining wires.

4 . Slide sleevings (8) back onto wires to expose terminals.

5. Using soldering iron and pliers, tag and unsolder wires from terminals of RETICLEresistor (9). Tag and unsolder wires from terminals of TUBE resistor ( 10) (JPG).Remove switch assembly.

6. Remove gasket (11 ).

END OF TASK


TM 9-1240-380-34

7-15. SWITCH ASSEMBLY REMOVAL (CONT)

Para 7-15 Cont

Vol II 7-19

Para 7-16

7-20

TM 9-1240-380-34

7-16. SWITCH ASSEMBLY INSTALLATION


TOOLS: #1 cross tip screwdriver ( Phillips type)Soldering iron

SUPPLIES: Solder (item 12, App. A)Tubing (item 15, App. A)

PERSONNEL: One

REFERENCES: JPG 41C for soldering

EQUIPMENT CONDITION: Switch assembly and elbow assembly on work bench

FRAME 1

Step

1 .

2.

3.

4.

5.

6.

7.

Procedure

Put gasket (1) on back of switch assembly cover plate (2).

Using screwdriver, remove screw (3), clamp (4) and terminal (5).

Using screwdriver, install terminal (6), terminal (5), clamp (4) (with diode) and screw(3).

Using soldering iron, solder wires as tagged to reticle resistor (7) and tube resistor (8)(JPG).

Slide sleevings (9) back onto terminals.

Position switch assembly cover plate (2) on elbow assembly (10) so holes on cover plate(2) line up.

Using screwdriver, install four lockwashers (11) and four screws (12).

NOTE


Install regulator assembly (para 7-13).Do checkout procedure (Vol I, para 2-5).

END OF TASK

Vol II

TM 9-1240-380-34

7-16. SWITCH ASSEMBLY INSTALLATION (CONT)

Para 7-16 Cont

Vol II 7 - 2 1

7-22

Para 7-17

TM 9-1240-380-34

Section

7-17. VALVE STEM AND

6. VALVE STEM AND VALVE CORE

VALVE CORE MAINTENANCE PROCEDURES INDEX






PERSONNEL: One

EQUIPMENT CONDITION: Elbowassembly on work bench

Step

1.

2.

3.

4.

Procedure

Using 7/16” wrench, remove valve (1) from elbow assembly (2).




END OF TASK

Vol aII

TM 9-1240-380-34


Para 7-18 Cont

Vol II 7 - 2 3

Para 7-19

7-24

TM 9-1240-380-34



TOOLS: 7/16” and 3/8” open end wrenchValve core wrench


PERSONNEL: One


EQUIPMENT CONDITION: Valve and elbow assembly on work bench

FRAME 1

Step Procedure

1. Using valve core wrench, install valve core (1) into valve stem (2).

2. Install strap (3) on valve stem (2) and cap (4).

3. Using 7/16” and 3/8” wrenches, install cap (4) on valve stem (2).

4. Put sealing compound on threads of valve stem (2) (JPG).

5. Using 7/16” wrench, install valve (5) in elbow assembly (6).

NOTE


Do checkout procedure (Vol I, para 2-5).

END OF TASK

Vol II

TM 9-1240-380-34


Para 7-19 Cont

Vol II 7 - 2 5

Para 7-20

7-26

TM 9-1240-380-34

Section 7. LATCH




7 - 2 1 . LATCH REMOVAL



PERSONNEL: One

EQUIPMENT CONDITION: Elbow assembly

FRAME 1

on work bench

Vol II

TM 9-1240-380-34




PERSONNEL: One

EQUIPMENT CONDITION: Elbow assembly and latch on work bench

Step Procedure

While holding latch (1) in place, use screwdriver to install two screws (2) and twowashers (3) into elbow assembly (4).

NOTE



END OF TASK

Para 7-22

Vol II 7 - 2 7

Para 7-23

7-28

TM 9-1240-380-34

Section 8. LAMPHOLDER AND PACKING

7-23. LAMPHOLDER AND PACKING MAINTENANCE PROCEDURES INDEX


RemovalInstallation

7-247-25

7 - 2 4 . LAMPHOLDER AND PACKING REMOVAL



PERSONNEL: One


Step Procedure

1. Using screwdriver, remove screw (1) and washer (2) and cord (3):

2.

3.

4.

I

Remove lampholder (4) from lamp cover (5) by pushing in and turning lampholder (4)counterclockwise.

Remove lamp (6) from lampholder (4).

Remove packing (7) from Iampholder (5).

END OF TASK

Vol II

TM 9-1240-380-34

7-24. LAMPHOLDER AND PACKING REMOVAL (CONT)

Para 7-24 Cont

Vol II 7 - 2 9

Para 7-25

7-30

TM 9-1240-380-34

7-25. LAMPHOLDER AND PACKING INSTALLATION




PERSONNEL: One



Procedure

Put washer (1) and screw (2) through loop (3) in cord of lampholder (4).

Using screwdriver, install screw (2) and, washer (1) in cover (5).


Place packing (6) on lampholder (4).

Install lamp (7) into lampholder (4).

Install lampholder (4) into cover (5) by pushing in and turning clockwise.

NOTE



END OF TASK

Vol II

TM 9-1240-380-34

7-25. LAMPHOLDER AND PACKING INSTALLATION (CONT)

Para 7-25 Cont

Vol II 7 - 3 1

Para 7-26

7-32

TM 9-1240-380-34

Section 9. BORESIGHT KNOBS ASSEMBLY

7-26. BORESIGHT KNOBS ASSEMBLY MAINTENANCE PROCEDURES INDEX


RemovalInstallation

7-277-28

7-27. BORESIGHT KNOBS ASSEMBLY REMOVAL


TOOLS: #1 cross tip screwdriver ( Phillips type)Jewelers screwdriver

PERSONNEL: One


FRAME 1

Step Procedure

NOTE

Maintenance procedures forassemblies are the same.

1. Using Phillips screwdriver, remove four screwsassembly (3) from elbow assembly (4).

2. Using jewelers screwdriver, remove packing (5) from boresight knob assembly (3).

END OF TASK

both boresight knob

(1), four washers (2), and boresight knob

Vol II

TM 9-1240-380-34

7-27. BORESIGHT KNOBS ASSEMBLY REMOVAL (CONT)

Para 7-27 Cont

Vol II 7 - 3 3

Para 7-28

7-34

TM 91240-380-34

7-28. BORESIGHT KNOBS ASSEMBLY INSTALLATION




PERSONNEL: One

PREFERENCES: JPG 41C for lubricating


Procedure

NOTE

Maintenance procedures for both boresight knobassemblies are the same.

Put a thin film of grease on surface of packing (1).

Place packing (1) on boresight knob assembly (2).

Install boresight knob assembly (2) into elbow assembly (3) with index mark facingeyepiece.


NOTE



END OF TASK

Vol II

TM 9-1240-380-34

7-28. BORESIGHT KNOBS ASSEMBLY INSTALLATION (CONT)

Vol II

Para 7-28 Cont

7-35/(7-36 blank)

TM 9-1240-380-34

CHAPTER 8

FINAL INSPECTION

8-1. SCOPE

This chapter gives final inspection and maintenance procedures to be done after repairing the M36 andM36E1 Periscopes.


Head Assembly Purging and 8-2Charging

Body Assembly Purging and 8-3Charging

Infrared Body Assembly Purging 8-4and Charging

Elbow Assembly Purging and 8-5Charging

Head Assembly Final Test 8-6

Body Assembly Final Test 8-7

Infrared Body Assembly Final Test 8-8

Elbow Assembly Final Test 8-9

Vol II

Para 8-18-1

Para 8-2

8-2

T M 9 - 1 2 4 0 - 3 8 0 - 3 4

8-2. HEAD ASSEMBLY PURGING AND CHARGING

TEST EQUIPMENT: Fire control purging kitTOOLS: 1/4" flat tip screw driver

3/8’’ open end wrench

SUPPLIES: Soap

PERSONNEL: One

REFERENCES: JPG 41C for purging and charging setup

EQUlPMENT CONDITION: Head assembly on work bench

PRELIMINARY PROCEDURES: Do purging and charging setup (JPG)


D E A T H

or severe injury may result if personnel fail to observe safetyprecautions listed in Job Performance Guide 113-091-9000R.

Procedure

Turn valve (1) fully counterclockwise.

Turn tank valve (2) counterclockwise until reading on high pressure gage (3) is greaterthan 100 psi (JPG).

Using screwdriver, remove machine thread plug and gasket (4) from head assembly (5).

Using wrench, remove cap (6) from purge valve (7).

Connect free end of hose assembly (8) to purge valve (7) of head assembly (5).

Turn valve (1) slowly clockwise until reading on low pressure gage (9) is 5 psi.

Wait 5 minutes. Turn valve (1) slowly counterclockwise until reading on low pressure gage(9) is 1 psi.

Using screwdriver, install

Check head assembly (5)para 4-3).

Wait two minutes. Turn

machine thread plug and gasket (4) into head assembly (5)..

for leaks (JPG). If leaks are found, fault isolate leaks (Vol I,

tank valve (2) fully clockwise.


Vol II

TM 9-1240-380-34

8-2. HEAD ASSEMBLY PURGING AND CHARGING (CONT)

Step Procedure

12. Remove hose assembly (8) from purge valve (7).

13. Check valve core (10) for leaks (JPG). If valve core (10) leaks, repair check valve (para 4-3) and repeat purge and charge.

14. Using wrench, replace cap (6) to purge valve (7).NOTE


Do purging and charging shutdown procedure (JPG).

END OF TASK

Vol IIPara 8-2 Cont

8 - 3

TM 9-1240-380-34

8-3. BODY ASSEMBLY PURGING AND CHARGING

TEST EQUIPMENT: Fire control purging kit

TOOLS: #2 cross tip screwdriver (Phillips type)3/8” open end wrench

SUPPLIES: SoapPERSONNEL: One

REFERENCES: JPG 4lC for purging and charging setup




D E A T H


Procedure

Turn vaIve (1) fully counterclockwise.

Turn tank valve (2) counterclockwise until reading on high pressure gage (3) is greaterthan 100 psi (JPG).

Using screwsaver, remove screw (4) from body assembly (5).

Using wrench, remove cap (6) from purge valve (7).

Connect free end of hose assembly (8) to purge valve (7) of body assembly (5).


Wait five minutes. Turn valve (1) slowly counterclockwise until reading on low pressuregage is 1 psi.

Using screwdriver, install screw (4) into body assembly (5).

Check body assembly (5) for leaks (JPG). If leaks are found, fault isolate leaks (Vol I,para 4-4).

Wait two minutes. Turn tank valve (2) fully clockwise,


Remove hose assembly (8) from purge valve (7).

Para 8-38-4 Vol II

TM 9-1240-380-34

8-3. BODY ASSEMBLY PURGING AND CHARGING (CONT)

Step Procedure

13. Check valve core (10) for leaks (JPG). If valve core (10) leaks, repair valve (para 5-21)and repeat purge and charge.

14. Using wrench, replace cap (6) to purge valve (7).

NOTE



END OF TASK

Para 8-3 Cont

Vol II 8 - 5 / ( 8 - 6 b l a n k )

TM 9-1240-380-34

8-4. INFRARED BODY ASSEMBLY PURGING AND CHARGING


TOOLS: 1/4” flat tip screwdriver3/8” open end wrenchFire control purging kit

SUPPLIES: Soap

PERSONNEL: One

REFERENCES: JPG 41C for purging and charging setup



High voltage. Make sure that rotary switch is set to OFFbefore continuing.


DEATH


Do not purge and charge infrared body assembly in brightlight. Prolonged exposure may cause damage to the imageconverter tube.

Vol II

Para 8-4

8 - 7

TM 9-1240-380-34

8 - 4 . INFRARED BODY ASSEMBLY PURGING A N D C H A R G I N G ( C O N T )

Procedure


Turn tank valve (2) counterclockwise until reading on high pressure gage (3) is greater than100 psi (JPG).

Using screwdriver, remove screw (4) from infrared body assembly (5).

Using wrench, remove cap (6) of purge valve (7).

Connect free end of hose assembly (8) to purge valve (7) of infrared body assembly (5).



Using screwdriver, install screw (4) into infrared body assembly (5).

Check infrared body assembly (5) for leaks (JPG). If leaks are found, fault isolate leaks(Vol I, para 4-9).

Wait two minutes. Turn tank valve (2) fully clockwise.


Remove hose assembly (8) from purge valve (7).

Check valve core (10) forrepeat purge and charge.

Using wrench, replace cap

leaks (JPG). If valve core (10) leaks, repair valve (para 6-24

(6) to purge valve (7).

NOTE


Do purging and charging shutdown procedure

END OF TASK

(JPG).

and

Para 8-4 Cont8 - 8

Vol II

TM 9-1240-380-34

8-4. INFRARED BODY ASSEMBLY PURGING AND CHARGING (CONT)

Para 8-4 Cont

Vol II 8 - 9

Para 8-5

8-10

TM 9-1240-380-34

8-5. ELBOW ASSEMBLY PURGING AND CHARGING


TOOLS: #1 cross tip screwdriver ( Phillips type)3/8” open end wrenchFire control

SUPPLIES: Soap

PERSONNEL: One

purging kit

REFERENCES: JPG 4lC for purging and charging



Procedure


Turn tank valve (2) counterclockwise until reading on high pressure gage (3) is greater than100 psi (JPG).

Using screwdriver, remove screw (4) from elbow assembly (5).

Using wrench, remove cap (6) of purge valve (7).

Connect free end of hose assembly (8) to purge valve (7) of elbow assembly (5).



Using screwdriver, install screw (4) into elbow assembly (5).

Check elbow assembly (5) for leaks (JPG). If leaks are found, fault isolate leak (Vol I,para 4-13).

Wait two minutes. Turn tank valve (2) fully clockwise.


Remove hose assembly (8) from purge

Check valve core (10) for leaks (JPG).repeat purge and charge.

valve (7).

If valve core (10) leaks, repair valve (para 7-17) and

Using wrench, replace cap (6) to purge valve (7).

Vol II

TM 9-1240-380-34

8-5. ELBOW ASSEMBLY PURGING AND CHARGING (CONT)

Step Procedure

NOTE



END OF TASK

Para 8-5 Cont

Vol II 8 - 1 1

TM 9-1240-380-34

8-6. HEAD ASSEMBLY FINAL TEST

PERSONNEL: One


N O T E

If you find a fault, tell your supervisor. If you do not find afault, send the good head assembly back into service.

FRAME 1

Step Procedure

Look through observation window (1). Check forwindow (1) or the prism inside the head assembly

Check that head assembly (2) is complete with all

Check head assembly (2) for cleanliness.

END OF TASK

dirt or moisture on the inside of the(2).

screws, nuts, seals, and washers in place.

Para 8-68-12 Vol II

TM 9-1240-380-34

8-6. HEAD ASSEMBLY FINAL TEST (CONT)

Para 8-6 Cont

Vol II 8 - 1 3

TM 9-1240-380-34

8-7. BODY ASSEMBLY FINAL TEST

PERSONNEL:

EQUIPMENT

One

CONDITION: Body assembly on work bench

NOTE

If you find a fault, tell your supervisor. If you do not find afault, send good body assembly back into service.

FRAME 1

Step Procedure

1. Checkplace.

2. Check

that body assembly (1) is complete

body assembly (1) for cleanliness.

END OF TASK

with all nuts, screws, washers, and seals in

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8-7. BODY ASSEMBLY FINAL TEST (CONT)

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8-8. INFRARED BODY ASSEMBLY FINAL TEST


PERSONNEL: One


NOTE

If you find a fault, tell your supervisor. If you do not find afault, send good infrared body assembly back into service.

FRAME 1

Step Procedure

1. Check that infrared body assembly (1) is complete with all nuts, screws, washers, andseals in place.

2. Check infrared body assembly (1) for cleanliness. IEND OF TASK

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8-8. INFRARED BODY ASSEMBLY FINAL TEST (CONT)


TM 9-1240-380-34

8-9. ELBOW ASSEMBLY FINAL TEST


PERSONNEL: One


NOTE

If you find a fault, tell your supervisor, If you do not find afault, send the good elbow assembly back into service.

FRAME 1

Step Procedure

1. Check that elbow assembly (1) is complete with all screws, nuts, seals, and washers inplace.

2. Check elbow assembly (1) for cleanliness.

END OF TASK

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8-9. ELBOW ASSEMBLY FINAL TEST (CONT)

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TM 9-1240-380-34

CHAPTER 9

PACKAGING

9-1. SCOPE

This chapter gives information on packaging of the M36 and M36E1 Periscopes for storage or shipment.

9-2. PREPARATION FOR PACKAGING OF OPTICAL PARTS

Cover all prisms or optical parts with at least four thicknesses of neutral lens tissue. Hold this with water-resistant, pressure-sensitive adhesive tape. Cover the lens tissue with cellulose cushioning material and usepressure-sensitive tape to hold it.

9-3. PACKAGING OF HEAD ASSEMBLY, BODY ASSEMBLY, INFRARED BODYASSEMBLY (M36), AND ELBOW ASSEMBLY (M36E1)

Packaging of head assembly, body assembly, infrared body assembly, and elbow assembly shall be inaccordance with AR 700-15.

9-4. PACKAGING

Pack all parts in a containernot break.

IN CONTAINERS

of the right size. Make sure they are braced and cushioned so that they will

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APPENDIX A

EXPENDABLE SUPPLIES AND MATERIALS LIST

Section 1. INTRODUCTION

A-1. SCOPE

This appendix lists expendable supplies and materials you will need toPeriscopes. These items are authorized to you by CTA 50-970, ExpendableV, Repair Parts, and Heraldic Items).

A-2. EXPLANATION OF COLUMNS

a. Column 1 - Item Number. This number is assigned to the entry in

repair the M36 and M36E1Items (Except Medical, Class

the listing and is used in themanual to identify the material, for example, sealing compound (item 7, App. A).

b. Column 2- Level. This column identifies the lowest level of maintenance that requires the listeditem.

F - Direct Support Maintenance

H - General Support Maintenance

c. Column 3- National Stock Number. This is the National stock number assigned to the item. Useit to request or requisition the item.

d. Column 4- Description. This tells the Federal item name and, if needed, a description to identifythe item. The last line for each item indicates the part number followed by the Federal Supply Code forManufacturer ( FSCM ) in parentheses, if applicable.

e. Column 5- Unit of Measure (U/M). This column shows how the item is measured, for example,you may see these abbreviations: ea (each), in (inches), or pr (pair). Order the smallest amount you need.

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Section 2. EXPENDABLE SUPPLIES AND MATERIALS

(1) (2) (3) (4) (5)National

Item StockNo. Level No. Description U / M

1 F 8040-00-298-1946 Adhesive, Reclaimed Rubber, CNLiquid, General Purpose,MIL-A-5092, Type 1 (81349)8 oz. can

2 F 6850-00-392-9751 Cleaning Compound, Optical QTLens, MIL-C-43454 (81349)1 qt. container

3 F 7920-00-205-1711 Cotton Flannel, Cleaning cloth RLCCC-C-458 (81349)50 lb. roil

4 F 9150-00-269-8255 Grease, Pneumatic System, LBMIL-G-4343 (81 349)1 lb. can

5 F 8010-00-298-2287 Paint, Exterior Surface GL1 gal. can

6 F 8010-00-292-1127 Primer, Paint KT1 kit

7 F 8030-00-275-8114 Sealing Compound, Non-curing, PTMIL-S-11030 (81349)1 pt. can

8 F 8030-00-275-8110 Sealing Compound, Adhesive Curing, PTMIL-S-11031 (81 349)1 pt. can

9 F 8040-00-833-9563 Sealing Compound, R. T. V. TU5 oz. tube

10 F 8030-00-252-3391 Sealing Compound, TUMIL-S-45180,Type II (81349)5 oz. tube

11 F 8030-00-052-8021 Sealing Compound, Locking and PTRetaining, MIL-S-224731 pt. can

12 F 3439-00-243-1888 Solder, Tin Alloy, Lead Tin Alloy, CNand Lead Alloy, QQ-S-571 (81349)

135 lb. can

F 6850-00-281-1985 Solvent, Dry Cleaning, GLP-D-680 (81348)1 gal. can

14 F 6640-00-2854694 Tissue, Lens, NNN-P-40 (81349) RM100 sh.

15 F 5970-00-088-2975 Tubing, Insulating (Shrinkable), FT1/8 in. dia. MIL-I-23053/5 (92194)3 ft. length

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APPENDIX B

MAINTENANCE TASK INDEX

B-1. SCOPE

This appendix helps you find maintenance tasks for the M36 and M36E1 Periscopes by giving youreferences to the procedures.

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Para 5-25/5-26

Para 5-13/5-14

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Para 5-10/5-11

Para 5-22/5-23

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APPENDIX C

FABRICATED TOOL

C-1. SCOPE

This appendix shows the tool, with dimensions and use, necessary to fix the M36 and M36E1 Periscopes.Dimensions are given so that you can have the tool made.

C-2. TUBE EXTRACTOR TOOL

Used to remove and install Image Intensifier Tube.

Para C-1

Vol IIC - 1 / ( C - 2 b l a n k

By Order of the Secretary of the Army:

JOHN A. WICKHAM, JR.General, United States Army

Chief of StaffOfficial:

DONALD J. DELANDROBrigadier General, United States Army

The Adjutant General

Distribution: To be distributed in accordance with DA Form 12-37, DirectSupport and General Support Maintenance requirements for Tank, Combat,Full-Tracked, 105–MM, M60; Tank, Combat, Full-Tracked, 105-MM, M60A1,Hull and M60A1 AOS: Vehicle, Combat Engineer, Full-Tracked, M728; Tank,Combat, Full-Tracked, 105-MM, M60A1 RISE, and M60A1 RISE PASSIVE, and Tank,Combat, Full-Tracked, 105-MM, M60A3 and TTS.

*U.S. GOVERNMENT PRINTING OFFICE: 1985-554-019:10129

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