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TM 11-5855-209-23DEPARTMENT OF THE ARMY TECHNICAL MANUAL
ORGANIZATIONAL AND DS MAINTENANCEMANUAL
NIGHT VISION SIGHTMINIATURIZED AN/PVS-3
(NSN 5855-00-832-9341)
AND
AN/PVS-3A (NSN 5855-00-156-4992)
T h i s c o p y i s a r e p r i n t w h i c h i n c l u d e s c u r r e n t
p a g e s f r o m C h a n g e s 1 t h r o u g h 5 .
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
20 FEBRUARY 1968
TM 11-5855-209-23C 5
CHANGE HEADQUARTERSDEPARTMENT OF THE ARMY
No. 5 WASHINGTON, DC, 2 January 1979
Organizational and Direct Support Maintenance ManualIncluding Repair Parts and Special Tools Lists
NIGHT VISION SIGHTS, MINIATURIZEDAN/PVS-3 (NSN 5855-00-832-9341)
ANDAN/PVS-3A (NSN 5855-00-156-4992)
TM 11-5855-209-23, 20 February 1968, is changed as follows:1. The title of the manual is changed as shown above.2. Remove and insert pages as indicated in page list below:
Remove InsertWarning (inside front cover) Warning (inside front cover)
3. File this change sheet in the front of the manual for reference purposes.
TM 11-5855-209-23By Order of the Secretary of the Army:
Official:
J. C. PENNINGTONBrigadier General, United States Army
The Adjutant General
Distribution:Active Army:
USAINSCOM (2)COE (1)TSG (1)USAARENBD (1)DARCOM (1)TRADOC (2)OS Maj Comd (4)TECOM (2)USACC (4)MDW (1)Armies (2)Corps (2)USAIB (2)USAIC (2)SvC Colleges (1)USASIGS (5)USAADS (10)USAFAS (5)USAARMS (20)USAIS (20)USAES (20)USAICS (3)MAAG (1)USARMIS (1)USAERDAA (1)USAERDAW (1)7th USA (10)8th USA (10)Fort Gillem (10)Fort Gordon (10)Fort Huachuca (10)Fort Carson (5)F’t Monmouth (HISA) (26)
Ft Richardson (CERCOM) (2)Army Dep (1) except
LBAD (14)SAAD (30)TOAD (14)SHAD (3)
USA Dep (1)Sig Sec USA Dep (1)Units org under fol TOE:
(1 cy each, UNOINDC)5-255-1275-1375-1465-1555-2157-157-357-457-557-10211-3511-3611-3711-3811-3911-9511-11711-21511-21611-500 (AA-AC)17-3517-52
BERNARD W. ROGERSGeneral, United States Army
Chief of Staff
17-9517-10517-10729-1629-3629-13429-13629-13757-4229-207 (2)29-610 (2)
NG: NoneUSAR: NoneFor explanation of abbreviations used, see AR 310-50.
RADIATION HAZARD
RADIOACTIVE MATERIALTHORIUM - 232
THE OPTICAL GLASS IN THE NIGHT VISIONSIGHT MAY CONTAIN THORIUM ANDPRESENT A POSSIBLE EYE HAZARD. AGREEN KNURLED RING, JUST FORWARD OFTHE EYESHIELD INDICATES THAT THENIGHT VISION SIGHT IS SAFE TO USE.
STD-RW-2
Image Intensifier Th232 Less than 30% 5855-054-8490
Radiation Hazard Information: The following radiation hazard in-formation must be read and understood by all personnel beforeoperating or repairing Night Vision sights NA/PVS-3 and AN/PVS-3A. Hazardous radioactive materials are present in the abovelisted component of the MK-8200/UV.
The components are potentially hazardous when broken. See qual-ified medical personnel and the local Radiological Protection Officer
(RPO) immediately if you are exposed to or cut by broken compo-nents. First aid instructions are contained in TB 43-0122, and AR755-15.
NEVER place radioactive components in your pocket. Use extremecare NOT to break radioactive components while handling them.NEVER remove radioactive components from cartons until you areready to use them.
If any of these components are broken, notify the local RPO im-mediately. The RPO will survey the immediate area for radiologicalcontamination and will supervise the removal of broken compo-nents. The above listed radioactive components will not be repairedor disassembled.
Disposal of broken, unserviceable, or unwanted radioactive compo-nents will be accomplished in accordance with the instructions inAR 755-15.
WARNING
TM 11-5855-209-23
T E C H N I C A L M A N U A L HEADQUARTERS,DEPARTMENT OF THE ARMY
No. 11–5855-209-23 W A S H I N G T O N, D. C., 20 February 1968
ORGANIZATIONAL AND DS MAINTENANCE MANUAL
NIGHT VISION SIGHT, MINIATURIZED AN/PVS-3
ParagraphC HAPTER 1. INTRODUCTION
Section I. General
Scope ----------------------------------------------------------------------------------------------- 1-1Indexes of publication -------------------------------------------------------------------------- 1-2Reporting of equipment manual improvements ---------------------------------------- 1-3
II. Functioning of Equipment
Objective lens assembly ------------------------------------------------------------------------ 1-4Image intensifier tube ----------------------------------------------------------------------- 1-5Eyepiece assembly -------------------------------------------------------------------------------- 1-6
C HAPTER 2. ORGANIZATIONAL MAINTENANCE
Scope of organizational maintenance ---------------------------------------------------------- 2-1Tools, materials, and test equipment --------------------------------------------------------- 2-2Organizational monthly preventive maintenance checks and services ---------- 2-3Maintenance of carrying case ----------------------------------------------------------------- 2-4Removal and replacement of eyeshield -------------------------------------------------- 2-5
C HAPTER 3. DIRECT SUPPORT MAINTENANCESection I. General
Scope of direct support maintenance ------------------------------------------------------- 3-1Tools, materials, and test equipment -------------------------------------------------------- 3-2Operational testing ------------------------------------------------------------------------- 3-3Power distribution ----------------------------------------------------------------------------- 3-4Continuity check ----------------------------------------------------------------------------- 3-5
II. TroubleshootingTroubleshooting checks ------------------------------------------------------------------- 3-6Image blurred ------------------------------------------------------------------------------------ 3-7Weak or no illumination of image intensifier tube ----------------------------------- 3-8Mechanical troubles ------------------------------------------------------------------- 3-9
III. Removal and ReplacementRange focus ring nylon bearings ------------------------------------------------------------ 3-10Battery retainer cover ------------------------------------------------------------------------- 3-llFocusing tube stop screw -------------------------------------------------------------------- 3-12Power switch ------------------------------------------------------------------------------------ 3-13Objective lens assembly ---------------------------------------------------------------------------------------- 3-14Eyepiece assembly ----------------------------------------------------------------------------- 3-15Image intensifier tube --------------------------------------------------------------------------- 3-16Focusing tube ---------------------------------------------------------------------------------------- 3-17Main body --------------------------------------------------------------------------------------------- 3-18Range focus ring ----------------------------------------------------------------------------------- 3-19
APPENDIX A. REFERENCES -----------------------------------------------------------------------------------------------------
B. MAINTENANCE ALLOCATION ---------------------------------------------------------------------------
Page
1-11-11-1
1-11-11-2
2-12-12-12-12-2
3 - l3-13-13-13-2
3-23-23-23-2
3-33-33-33-33-33-43-43-53-63-6
A-1
B-1
i
TM 11-5855-209-23
CHAPTER 1
INTRODUCTION
Section I.
1-1. Scopea. This manual contains organizational
and direct support (DS) maintenance in-structions for Night Vision Sight AN/PVS-3and AN/PVS-3A (night sights). It includesbasic functioning of the night sight, trou-bleshooting, and removal and replacementprocedures for parts available at the or-ganizational and DS category of mainte-nance.
b. The maintenance allocation chart(MAC) appears in appendix B. Therepair parts and special tools listappears in appendix C. Appendix C iscurrent as of 13 October 1971.
c. Operating instructions are containedin TM 11-5855-209-10.
NOTEFor applicable forms and records,see paragraph 1-3, TM 11-5855-209-10.
1-2. Indexes of Publicationsa. DA Pam 310-4. Refer to the latest
GENERAL
issue of DA Pam 310-4 to determinewhether there are new editions, changes,or additional publications pertaining to theequipment.
b. DA Pam 310-7. Refer to DA Pam310-7 to determine whether there are modi-fication work orders (MWO’s) pertainingto the equipment.
1-3. Reporting of Equipment Manual Im-provements
Reporting of errors, omissions, and recom-mendations for improving this publicationby the individual user is encouraged. Re-ports should be submitted on DA Form2028 (Recommended Changes to Publica-tions) and forwarded direct to Command-ing General, U.S. Army Electronics Com-mand, ATTN: AMSEL-MA-A, FortMonmouth, N. J., 07703.
Section II. FUNCTIONING OF EQUIPMENT
1-4. Objective Lens Assembly(fig. 3-2)
The objective lens assembly (2) used theavailable light of the night sky to focus animage of the scene being viewed on thefront screen of the image intensifier tube(14). Under nighttime illumination con-ditions, this image may be very dim andnot visible to the naked eye. Focusingof the image is accomplished by varyingthe distance of the image intensifier tube(14) from the objective lens assembly.
1-5. Image Intensifier Tube(fig. 3-2)
The image intensifier tube (14) receivesthe dim image from the objective lens as-sembly (2), amplifies it, and displays theimage on the rear screen of the tube. Thebrightness of the image is amplified tosuch a degree it can be seen with thenaked eye. Power for operation of theimage intensifier tube is supplied by the2.8-volt battery tray (10).
Change 3 1-1
TM 11-5855-209-23
1-6. Eyepiece Assembly(fig. 3-2)
The eyepiece assembly (18) magnifies theimage displayed on the rear screen of theimage intensifier tube (14). Focusing ofthe image is accomplished by varying thedistance of the eyepiece assembly fromthe rear screen of the image intensifiertube.
1-2 Change 2
TM 11-5855-209-23
CHAPTER 2
ORGANIZATIONAL MAINTENANCE
2-1. Scope of Organizational MaintenanceThe maintenance duties assigned to theorganizational maintenance personnel arelisted below together with reference to theparagraphs covering the specific mainte-nance duty. These duties are performedin addition to those given in the operator’sdaily preventive maintenance checks andservices chart (TM 11-5855-209-10).
a. Monthly preventive maintenancechecks and services (para 2-3).
b. Removal and replacement of eye shield(para 2-5).
c. Installation and removal of the bore-sight mount (para 2-6 and 2-7).
d. Installation and removal of the M-14Adapter Bracket (para 2-8).
e. Installation and removal of the M-16Adapter Bracket (para 2-9).
2-2. Tools, Materials, and Test EquipmentA small screwdriver is the only tool re-quired. A lint free cloth (FSN 8305-170-5062) is required for general cleaning. Notest equipment is required for organiza-tional maintenance of the night sight.
2-3. Organizational Monthly PreventiveMaintenance Checks and Services
SequenceNo.
1 a
2
3
4 b
5
Item to be inspected
Eyepiece . . . . .
Cover assembly cap . . .
Eyeshield . . . . .
Carrying Case . . . . .
Technical manual . . . .
Procedure
a.b.
a.
b.c.
Remove eyeshieldClean eyepiece lens
Check for proper fitCheck for cracksClean cap lens .
. . . .
. . . .
. . . .
. . . .
. . . .Check for tears, holes, or signs
of deterioration.a. Examine for evidence of
rotting or weakening offabric by stretching orpulling.
b. Check for mildew, oil orgrease.
Check for torn or missing pagesand general condition.
Remarks or reference
a. Para 2-5.b. TM 11-5855-209-10.
Note. Refer toTM 11-5855-209-10.
a. Replace.b. Replace.c. TM 11-5855-209-10.Para 2-5.
a. Replace.
b. Para 2-4.
Replace.
aTo be performed daily if required.bTo be performed daily or weekly (as required) in tropical areas.
24. Maintenance of Carrying Case to remove dirt, do not use it until all mil-
a. Mildew. To prevent the formation of dew has been removed.mildew, air the carrying case for several b. Oil and Grease. Oil and grease canhours. Remove mildew by scrubbing with be removed from the carrying case bya dry, stiff brush. If water is necessary scrubbing with soap and warm water. Rinse
Change 2 2-1
TM 11-5855-209-23
well in clear water and allow the carryingcase to dry thoroughly before installingthe night sight.
2-5. Removal and Replacement of Eye-shield(fig. 3-3)
Replace the eyeshield when it is torn,cracked, or otherwise unserviceable.
a. Removal. Grasp the eyeshield (8)and turn it counterclockwise.
b. Replacement. Replace the eyeshield(8) on the retaining ring (5) and tightenclockwise.
N O T ERemove four screws (6) to removethe retaining ring (5).
2-6.
(27)
(27)
Installation and Removal of BoresightMount (AN/PVS-3A Only)(fig. 3-2)Installation. Install the two screws
and tighten.Removal. Unscrew the two screwsthat attach the boresight mount to
the main body (4).
2-7. Installation and Removal of BoresightMount (AN/PVS-3 Only)(fig. 3-3)
a. Installation. Install the two screws(11); install strap (12) around boresight(1) with relief toward screw (2). Placespring (14) in position against coupler ring(3); and thread screw (13) through strap(12), spring (14), boresight mount (15),and tighten.
b. Removal. Unscrew the two screws(11) from objective cell flange. Unscrewscrew (13) from strap (12), spring (14),boresight mount (15), and remove strap(12) from around boresight. Retain spring(14) for reassembly.
2-8. Installation and Removal of M-14Adapter Bracket(fig. 2-1)
a. Installation.(1) Position the adapter bracket on
2-2 Change 2
the receiver assembly.(2) Position the washer and screw and
tighten down the screw by turning it clock-wise.
b. Removal(1) Remove the screw and washer by
turning the screw counterclockwise.(2) Lift the adapter bracket from the
receiver assembly.
Figure 2-1. Adapter bracket M-14.
2-9. Installation and Removal of M-16Adapter Bracket(fig. 2-2)
a. Installation.(1) Place the adapter bracket against
the weapon handle and receiver and pushinward and downward until the mountingears are underhandle.
(2) Positionagainst the topthe way forward.
(3) Tightenit clockwise.
b. Removal.
and around the weapon
the adapter bracket flatof the receiver and all
the wingnut by turning
(1) Loosen the wingnut by turning itcounterclockwise.
a .
b.
TM 11-5855-209-23
(2) Grasp the adapter bracket andremove in an upward and outward direc-tion until the mounting ears clear theweapon handle.
Change 2 2-3
Figure 2-2. Adapter bracket M-16.
TM 11-5855-209-23
CHAPTER 3
DIRECT SUPPORT MAINTENANCE
Section I.
3-1. Scope of Direct Support MaintenanceThe maintenance duties assigned to directsupport maintenance personnel are listedbelow, together with reference paragraphscovering the specific maintenance duty.These duties are performed in additionto those assigned to the operator (TM11-5855-209- 10) and organizational main-tenance personnel (para 2-1).
a. Troubleshooting (paras 3-6 and 3-9).
b. Removal and replacement of com-ponents (paras 3-10 through 3-20).
c. Testing (para 3-3).
3-2. Tools, Materials, and Test Equipmenta. Tools. The tools required for direct
support maintenance are contained in Tool-kit, Electronic Equipment TK-100/G (app.B).
b. Materials.(1) Silicone compound, Dow Corning,
DC-4 (MIL-G-8660, FSN) or equivalent,is required for lubricating o-rings andthreads.
(2) Acetone (FED STD Q-A-51d) orequivalent is required for cleaning the partsof the boresight mount.
(3) Molybdenum disulfate (MIL-G-21164) is required for lubrication of theboresight mount.
c. Test Equipment. A multimeter(Multimeter TS-352B/U or equivalent) isrequired for direct support maintenance(app. B).
3-3. Operational TestingAn operational test should be performedwhenever the image intensifier tube, ob-
General
jective lens assembly, eyepiece assembly,main body components, or electrical com-ponents have been replaced or repaired.Refer to the operator’smaintenance checks andTM 11-5855-209-10.
3-4. Power Distribution(fig. 3-1)
The path for current flowsight is given below.
daily preventiveservices chart in
through the night
a. From the image intensifier tube pow-er pin to the power contact spring.
b. From the power contact spring tothe printed circuit board.
c. From the printed circuit board to thenegative side of the battery tray.
d. From the positive side of the batteryin the battery tray to the battery contactspring.
e. From the battery contact spring tothe negative side of the battery in thebattery tray.
f. From the positive side of the batteryin the battery tray to the printed circuitboard.
g. From the printed circuit board topower switch terminal A.
h. From power switch terminal B to theprinted circuit board.
i. From the printed circuit board to theground contact spring.
j. From the ground contact spring tothe focusing tube.
k. From the focusing tube ground con-tact spring to the ground pin.
Change 2 3-1
(4) Set the multimeter range selector to
Figure 3-1. Night sight, location of electrical parts.
a. The wiring, printed circuit board, powerswitch, and electrical contact springs may bechecked for electrical continuity with a multim-eter as indicated below. Insure that a freshbattery tray is installed.
(1) Place the power switch in the offposition (toward the objective lensend of the night sight).
(2) Remove the eyepiece assembly (para3-15).
(3) Remove the image intensifier tube(para 3-16).
(5)
(6)
(7)
(8)
(9)
b. If
measure 3 volts direct current (de).Connect the multimeter negativelead to the ground contact sprin
Place the power switch in the on po-sition (toward eyepiece assembly endof the night sight).Place the multimeter positive testprobe onto the power contact springinside the focusing tube (13, fig. 3-2).The multimeter should indicate be-tween 2.6 and 2.8 volts dc.Place the power switch in the off po-sition (toward objectivethe night sight). Theshould indicate 0.
the electrical continuityabove reveals an open circuit,
lens end ofmultimeter
check in athe power
switch must be removed (para 3-13) and theindividual wires and power switch must bechecked for continuity, If the continuity checkof the power switch and wires is satisfactory,remove the focusing tube (para 3-17) andcheck for defective electrical contact springs.
Section II. TROUBLESHOOTING
3-6. Troubleshooting ChecksThis section provides information for diag-
nosing and correcting unsatisfactory operationor failure of the night sight or any of its com-ponents. Each trouble symptom (para 3-7and 3-8) contains a list of probable causeswith the corrective measure. The mechani-cal troubles with corrective measures are con-tained in paragraph 3-9.
3-7. Image BlurredProbable cause
Defective image intensi-fier tube.
Damaged or defectiveobjective lens assem-bly.
Damaged or defectiveeyepiece assembly.
3-2 Change 2
Corrective measure
Replace image intensifiertube (para 3-16).
Replace objective lensassembly (para 3-14).
Replace eyepiece assembly(para 3-15).
3-8. Weak or No Illumination of ImageIntensifier Tube
Probable cause Corrective measure
Defective image intensi- Replace image intensifierfier tube. tube (para 3-16).
Defective power switch. Replace power switch(para 3-13).
Defective focusing tube Replace focusing tubeelectrical contact spring. (para 3-17).
3-9. Mechanical Troubles
Range focus ring, whenturned counterclockwise,slips out of threads.
Boresight mount will notadjust properly in azimuthor elevation.
Corrective measure
Para 3-19.
Para 3-12.
Para 3-20.
3-5 Continuity Check(fig. 3-1)
Probable cause
Range focus ring will notrotate.
TM 11-5855-209-23
Section III. REMOVAL AND REPLACEMENT
CAUTIONBe sure that the power switch isin the off position (toward the ob-jective lens end of the night sight)before removing or replacing anycomponents of the night sight.
3-10. (Deleted.)
3-11. Battery Retainer Cover(fig. 3-2)
Replace the battery retainer cover whenbent or when attaching thumbscrews aredamaged or missing.
a. Removal. Unscrew and remove thebattery cover hinge pin (7) from the bat-tery housing.
CAUTIONSeal the battery cover hinge pin (7)with Loctite sealant or equivalent.
b. Replacement. Install a new batteryretainer cover and insert a new batterycover hinge pin.
3-12. Focusing Tube Stop Screw(fig. 3-2)
a. Removal.(1) Rotate the range focus ring (16)
in a clockwise direction until the stop screw(8) is fully exposed.
(2) Unscrew the stop screw.
b. Replacement. Install a new stopscrew and tighten only enough to sealO -ring against the main body.
CAUTIONDo not over torque screw.
NOTEWhen removing the stop screw,make sure that the attached O-ringis also removed. When installing anew stop screw, make sure that theO-ring is attached.
3-13. Power Switch(fig. 3-2)
a. Removal.(1) Open the battery retainer cover
(9) and remove the battery tray (10).(2) Use a small tip (pencil type) sol-
dering iron and unsolder the wires con-nected to the power switch (11) terminals.
(3) Use a recessed socket wrench andremove the nut (6) from the power switch.
b. Replacement.(1) Install the power switch (11) into
the battery housing, thread the nut (6)to the power switch, and tighten.
(2) Solder the wires to the power switch(11) terminals.
(3) Remove all loose residue solderfrom the inside of the battery
3-14. Objective Lens Assembly(fig. 3-2)
a. Removal.
housing.
(1) Unscrew six screws (5) from themain body (4).
(2) Remove the objective lens assem-bly (2) from the main body.
(3) Remove the O-ring (3) from themain body (4). Discard the O-ring.
b. Inspection.(1) Inspect the optical surfaces for
mars, cracks, or chips.(2) Visually inspect the interior of the
assembly for damage, condensation mil-dew, or fungus.
c. Repair. Replace the objective lensassembly with a new assembly if inspectionreveals any damage, interior condensation,mildew, or fungus.
Change 2 3-3
d. Testing. The only method of testing for adefective objective lens assembly is by sub-stitution of a known good objective lens as-sembly.
e. Replacement. Before replacing the ob-jective lens assembly, insure that all opticalsurfaces and mating metal surfaces are cleanand dry.
(1) Install a new O-ring (3) on the mainbody (4).
(2) Align the slot on the objective lensassembly with the slot on the main body.
(3) Install the six screws (5) and tightensequentially as shown in figure 3-1.1.
TM5855-209-23-CI-10
Figure 3-1.1. Screw Tightening Sequence.
3-15. Eyepiece Assembly(fig. 3-2)
CAUTIONWhen removing the eyepiece as-sembly from the focusing tube, holdthe eyepiece end up to prevent theimage intensifier tube from slidingout.
a. Removal.(1) Grasp the eyepiece assembly (18)
firmly by the focus ring and turn counter-
clockwise to unscrew the eyepiece assemblyfrom the focusing tube (13).
(2) Remove the O-ring (17) from the eye-piece assembly.
b. Inspection.(1) Inspect the exterior of the eyepiece
assembly for mechanical damage.(2) Inspect the threads for burrs or other
damage.(3) Inspect the optical surfaces for mars,
cracks, or chips.(4) Inspect the convolutions that mate
with the image intensifier tube for damage.(5) Visually inspect the interior of the
assembly for damage, condensation, mildew,or fungus.
c. Repair.(1) Remove burrs from the threads with
a small file or emery cloth.(2) Replace the eyepiece assembly with a
new eyepiece assembly if inspection revealsany damage, interior condensation, mildew,or fungus.
d. Testing. The only method of testing a de-fective eyepiece assembly is by substitution ofa known good eyepiece assembly.
e. Replacement. Before replacing the eye-piece assembly, insure that all optical sur-faces are clean and dry. Clean the convolu-tions with lens tissue, wet with alcohol.
(1) Lubricate a new O-ring (17) with sili-cone compound and install on the eyepieceassembly (19).
(2) Thread the eyepiece assembly (18)into the focusing tube (13) in a clockwise di-rection until a snug fit is obtained. Make cer-tain the focus ring is at its maximum clock-wise stop position.
(3) Locate small hole on the eyepiece fo-cus ring. While viewing through the hole,slowly turn the eyepiece focus ring counter-clockwise until the reference mark on theeyepiece body is in view through the hole onthe focus ring. After removing all play be-tween the eyepiece assembly and the focusingtube, back off the eyepiece assembly ¼ turn.
(4) While holding the eyepiece body andfocus ring firmly aligned, position the diopterindicator (wire pointer located under the fo-
3-4 Change 2
cus ring) to indicate; diopterpiece body.
3-16. Image Intensifier Tube(fig. 3-2)
WARNING
on the eye-
The image intensifier tube phosphorscreens contain toxic material. If’an image intensifier tube becomesbroken, be extremely careful to pre-vent inhalation of the phosphor ma-terial. Do now allow it to come incontact with the mouth or open skinwounds.
a. Removal. Remove the eyepiece as-sembly (para 3-15).
CAUTIONThe image intensifier tube may re-tain a static high-voltage charge.Do not touch metal components ofthe tube until discharged (3) below).(1) Remove the image intensifier tube
(14) from the main body (4).(2) Remove battery tray (10).
NOTETo remove the image intensifiertube, a gentle tap on the night sightwhile it is held at a slight angle(eyepiece end down) may be neces-sary. Keep the free hand over theopen end of the main body (4) toprevent the image intensifier tubefrom falling.
(3) The image intensifier tube will dis-charge itself in a normally lighted area(roomlight, etc). Discharge may be veri-fied by shorting across metal componentsof the image intensifier tube.
(4) Remove the image tube washer(15) from the image intensifier tube.
b. Testing. The only method of testingfor a defective image intensifier tube isby substitution of a known good imageintensifier tube.
c. Replacement. Before replacing theimage intensifier tube, insure that the glassfaces, ground pin, and power pin are clean.
(1) Note the position of the power pin
TM 11-5855-209-23
and ground pin on the image intensifiertube (14).
(2) Look at the inside end of the focus-ing tube (13) and note the position of thepower and ground contact springs.
(3) Visually align the image tube con-tact pins with the focusing tube contactsprings. Carefully insert the image in-tensifier tube into the focusing tube.
(4) Rotate the image intensifier tubeslightly in either direction locate theimage intensifier tube power and groundpins with the mating contact springs of thefocusing tube.
(5) Install image tube washer (15)into the focusing tube.
(6) Thread the eyepiece assembly (18)into the focusing tube (13) in a clockwisedirection.
(7) Replace battery tray (10).
3-17. Focusing Tube(fig. 3-2)
a. Removal.(1) Remove the image intensifier tube
(14) (para 3-16).(2) Remove the range focus ring set-
screws (24).(3) Remove the focusing tube stop
screw (8) (para 3-12).(4) Rotate the range focus ring clock-
wise to disassemble the focusing tube (13)from the main body (4). Pull focusingtube (13) gently from the main body.
CAUTIONDo not rotate focusing tube in mainbody when stop screw is removed.Power contact spring (fig. 3-1) maysnag in main body (4). Forcing orrapidly extracting focus tube frommain body may bend or break offpower contact spring.(5) Remove the range focus ring (16)
from the main body (4).
b. Inspection.(1) Inspect the threads for burrs or
damaged threads.
Change 2 3-5
TM 11-5855-209-23
(2) Inspect the power and ground con-tact springs for damage or corrosion.
c. Repair.(1) Remove burrs from the threads with
a small file or emery cloth. Clean the con-tact springs.
(2) Replace the focusing tube wheninspection reveals damage, which rendersthe focusing tube unserviceable.
d. Replacement. Before replacing thefocusing tube (13) and range focus ring( 16), make sure that all threads are clean.
(1) Lubricate the threads on the mainbody (4), focusing tube (13), and rangefocus ring (16) with silicone compound.
(2) Place the range focus ring (16)on the main body (4). Do not startthreads.
NOTEThe zero diopter mark on the focus-ing tube must be aligned with thefocusing tube stop screw hole whenperforming (3) and (4) below.(3) Gently insert the focusing tube ( 13)
through range focus ring (16) and intothe main body (4).
(4) Turn the range focus ring (16)clockwise until the range focus ring reachesthe stop position.
(5) Install the focusing tube stop screw(8) (para 3-12).
3-18. Main Body(fig. 3-2)
a. Removal.(1) Remove the objective lens assem-
bly (para 3-14).(2) Remove the focusing tube (para
3-17).
b. Repair.(1) Remove burrs from the threads
with small file or emery cloth.(2) Replace the main body with a new
main body if inspection reveals any dents,cracks, or other damage which rendersthe main body unserviceable.
c. Replacement.(1) Install the objective lens assembly
(para 3-14).(2) Install the focusing tube (para
3-17d).
3-19. Range Focus RingRemove, inspect, repair, and replace rangefocus ring in accordance with paragraph3-17.
3-20. Boresight Mount, AN/PVS-3 andAN/PVS-3A(figs. 3-2, 3-3, and 3-4)
a. Removal, AN/PVS-3 (fig. 3-3). Re-move screw (13) from boresight mount (15)and remove strap (12) and spring (14).Retain these components for reassembly.
b. Removal. AN/PVS-3A (fig. 3-2).Loosen the two captive screws (27) andthe bore sight mount (25) will separate fromnight sight.
c. Disassembly (fig. 3-4).(1) Place a screwdriver in the slot
in pin (1) and relax the tension on pin(2).
(2) Remove pin (2), release and re-move pin (1).
(3) Remove retaining ring (3) and liftthe crossbar (4) from the boresight frame(5).
NOTECrossbar on the boresight mountfor AN/PVS-3 is shown in figure 3-3.The crossbar illustrated in figures3-2 and 3-4 is the one used with theAN/PVS-3A. Except for this differ-ence, the boresight mounts are iden-tical.(4) Remove the spiral spring (6) from
the crossbar (4) and remove captive screws(7) and (8). The flat spring (9) may bepulled out after removal of screw (8).
(5) Remove self-locking screw (10) andunscrew pin (11) from the shaft of knob(12).
(6) Remove knob (12), ball bearings(13 and 14), and compression spring (15)from the boresight frame (5).
3-6 Change 2
TM 11-5855-209-23
(7) Remove retaining ring (16) andthrust washer (17) from the shaft of knob(18).
(8) Remove knob (18) from boresightframe (5) and post (19) by turning knobcounterclockwise. The post (19), compres-sion spring (20), and ball bearing (25)are now removable.
(9) Remove pin (21) from knob (22)and locking screw (23).
(10) Remove locking screw (23), knob(22), and washer (24) from boresight frame(5) by turning counterclockwise.
d. Cleaning and Lubrication.(1) Cleaning. Clean both inside and
outside surfaces, threads, grooves, andflanges of the boresight frame (5) andcrossbar (4). Use a fine brass wire brushto remove dirt imbedded in grooves andflanges. Clean wipe components with aclean, lint free cloth saturated in acetone.Make certain that all parts are free ofoil, grease, and other foreign matter.
(2) Lubrication. At assembly, lubri-cate the following items with molybdenumdisulfide.
(a) Knob (12) shaft.(b) Knob (18) shaft.(c) Compression spring (15).(d) Compression spring (20).
e. Inspection.(1) Visually inspect all mechanical
parts to be certain that they are free ofoil, dust, or other foreign matter.
(2) Inspect all threads on metal partsfor burrs or damaged threads.
(3) Inspect all metal parts for cracksor dents.
f. Repair. Remove all burrs from
threaded parts with a small file or emerycloth. Unrepairable items must be replaced.
g. Assembly.(1) Place the knob (22) and washer
(24) on the locking screw (23). Alignthe holes in the knob with the hole inthe locking screw and insert pin (21).
(2) Insert the locking screw (23) intothe boresight frame (5) and tighten se-curely.
(3) Insert post (19), compressionspring (20), and ball bearing (25) into theboresight frame (5).
(4) Insert knob ( 18) through the bore-sight frame (5) and post (19) and installthrust washer (17) and retaining ring (16)to the shaft of the knob.
(5) Install compression spring (15),ball bearings (13 and 14), and knob (12)into the boresight frame (5).
(6) Install pin (11) onto the shaft ofknob (12) and install self-locking screw(10) and tighten the screw securely.
(7) Install the flat spring (9), captivescrews (7 and 8), and spiral spring (6)into the crossbar (4).
(8) Position the crossbar (4) onto theboresight frame (5). Align the hole on thecrossbar to fit over post (19) and installretaining ring (3).
(9) Install pin (1) into the boresightframe (5), aligning the groove in the pinwith the inside end of the spiral spring (6).
(10) Using a torque wrench with ascrewdriver attachment, insert the screw-driver tip into pin (1) and tighten to atorque of 90 (±10) inch-pound. Alignthe pins slot with the holes in the bore-sight frame (5) and insert pin (2).
Change 2 3-7
TM 11-5855-209-23
11121314
Cover assembly, cap lA1MP1 15Objective lens assembly lA1 16O-ring 1MP2 17Main bodv 1A2 18Screw 1MP3-8Nut A2A148Hinge pin 1A2A1H4Focusing tube stop screw 1A2H1Battery retainer cover 1A241A2Battery trav A1El 24Power switch A2A1S1O-ring 1A2MP2Focusing tube 1A2A2Image intensifier tube 1A2A2
252627
Image tube washer 1MP4Range focus ring 1A2MP1O-ring 1MP1Eyepiece assembly 1A3Eyeshield 1A3A1A1
S c r e w 1 A 3 H 3Washer 1A2A1H7O-ring A2A1H7Setscrew 1A242-5Boresight mount 1A4Eyepiece spacer 1A3A1MP2Screw, captive 1A4H6
Figure 3-2. Night sight, exploded view (AN/PVS-3A).
3-8 Change 2
1920212223
123456789
10
Retaining ring 1A3A1MP1
TM 11-5855-209-23
Change 2 3-9
Figure 3-3. Night sight, exploded view (AN/PVS-3).
113456789
1 0111 213141 5
Main body 1A2Focusing tube stop screw 1A2H1Focusing tube 1A2A2Range focus ring 1A2MP1Retaining ring 1A3A1MP1Screw 1A3H3Eyepiece spacer 1A3A1MP2Eyeshield 1A3A1A1Cover assembly cap 1A1MP1Adapter bracketScrew 1MP3-8StrapScrewSpring, flat MP4Boresight mount 1A4
TM 11-5855-209-23
Pin (MP1)Pin (H1)Retaining ring (H2)Crossbar (MP3)Boresight frame (MP7)Sprial spring (MP2)Captive screw (H3)Captive screw (H4)Flat spring (MP4)Self-locking screw (H5)
Knob (MP6)Ball bearing (MP8)
1415161718
Ball bearing (MP9)Compression spring (MP10)Retaining ring (H6)Thrust washer (H7)Knob (MP11)Post (MP12)Compression spring (MP14)Pin (H8)
Figure 3-4. Bore sight mount, exploded view.
3-10 Change 2
1 2 3 4 5 6 7 8 9 10 11 12 13
Pin (MP5)
19202122232425
Knob (MP15)Locking screw (H9)Washer (MP16)Ball bearing (MP13)
TM 11-5855-209-23
APPENDIX AREFERENCES
The following publications contain information applicable to the organizational and DS maintenance ofthe AN/PVS-3 and AN/PVS-3A:DA Pam 310-4 Index of Technical Manuals, Technical Bulletins, Supply Manuals
(types 7,8, and 9), Supply Bulletins, and Lubrication Orders.DA PAM 310-7 Index of Modification Work Orders.TB 746-10 Field Instructions for Painting and Preserving Electronics
Command Equipment.TM 11-5855-209-10 Operator’s Manual, Night Vision Sight, Miniaturized AN/PVS-3
and AN/PVS-3A.TM 11-6625-366-15 Operator’s, Organizational, DS, GS, and Depot Maintenance
Manual: Multimeter TS-352B/U.TM 38-750 The Army Maintenance Management Systems (TAMMS).
A-1
TM 11-5855-209-23
APPENDIX B
MAINTENANCE ALLOCATION
Section I. INTRODUCTION
B-1. GeneralThis appendix provides a summary of themaintenance operations covered in theequipment literature for the AN/PVS-3. Itauthorizes categories of maintenance forspecific maintenance functions on repaira-ble items and components and the toolsand equipment required to perform eachfunction. This appendix may be used asan aid in planning maintenance operations.
B-2. Maintenance FunctionsMaintenance functions will be limited to anddefined as follows:
a. INSPECT. To determine serviceabil-ity of an item by comparing its physical,mechanical, and electrical characteristicswith established standards.
b. TEST. To verify serviceability and todetect incipient electrical or mechanicalfailure by use of special equipment suchas gages, meters, etc. This is accomplishedwith external test equipment and does notinclude operation of the equipment andoperator type tests using internal metersor indicating devices,
c. SERVICE. To clean, to preserve, tocharge, and to add fuel, lubricants, coolingagents, and air. If it is desired that ele-ments, such as painting and lubricating,be defined separately, they may be solisted.
d. ADJUST. To rectify to the extentnecessary to bring into proper operatingrange.
e. ALIGN. To adjust two or more com-ponents or assemblies of an electrical ormechanical system so that their functionsare properly synchronized. This does notinclude setting the frequency control knobof radio receiversdesired frequency.
f. CALIBRATE.
or transmitters to the
To determine the cor-
rections to be made in the readings of in-struments or test equipment used in pre-cise measurement. Consists of the com-parison of two instruments, one of which isa certified standard of known accuracy, todetect and adjust any discrepancy in theaccuracy of the instrument being comparedwith the certified standard.
g. INSTALL. To set up for use in anoperational environment such as an en-campment, site, or vehicle.
h. REPLACE. To replace unserviceableitems with serviceable like items.
i. REPAIR. To restore an item to serv-iceable condition through correction of aspecific failure or unserviceable condition.This function includes, but is not limitedto welding, grinding, riveting, straighten-ing, and replacement of parts other thanby the trial and error replacement of run-ring spare type items such as fuses, lamps,or electron tubes.
j. OVERHAUL. Normally, the highestdegree of maintenance performed by theArmy in order to minimize time work inprocess is consistent with quality and econ-omy of operation. It consists of that main-tenance necessary to restore an item tocompletely serviceable condition as pre-scribed by maintenance standards in tech-nical publications for each item of equip-ment. Overhaul normally does not returnan item to like new, zero mileage, or zerohour condition.
k. REBUILD. The highest degree of ma-teriel maintenance. It consists of restoringequipment as nearly as possible to newcondition in accordance with original manu-facturing standards. Rebuild is performedonly when required by operational consid-erations or other paramount factors andthen only at the depot maintenance cate-gory. Rebuild reduces to zero the hours ormiles the equipment, or component there-
Change 2 B-1
TM 11-5855-209-23
of, has been in use.
l. SYMBOLS. The uppercase letterplaced in the appropriate column indicatesthe lowest level at which that particularmaintenance function is to be performed.
B-3. Explanation of Formata. Column 1, Group Number. Column
1 lists group numbers, the purpose of whichis to identify components, assemblies, sub-assemblies and modules with the next high-er assembly.
b. Column 2, Fictional Group. Column2 lists the noun names of components, as-semblies, subassemblies and modules onwhich maintenance is authorized.
c. Column 3, Maintenance Functions.Column 3 lists the maintenance categoryat which performance of the specfic main-tenance function is authorized. Authoriza-tion to perform a function at any categoryalso includes authorization to perform thatfunction at higher categories. The codesused represent the various maintenancecategories as follows:Code Maintenance categoryC . . . . . . . Operator/crewO . . . . . . . Organizational maintenanceF. . . . . . . . Direct support maintenanceH . . . . . . . General support maintenanceD . . . . . . . Depot maintenance
d. Column 4, Tools and Test Equipment.Column 4 specifies, by code, those toolsand test equipment required to performthe designated function. The numbers ap-pearing in this column refer to specifictools and test equipment’ which are identi-fied in table 1.
tory.
B-4.
Column 5, Remarks. Self-explana-
Explanation of Format of Table 1,Tool and Test Equipment Require-ments
The columns in table 1 are as follows:a. Tools and Equipment. The numbers
in this column coincide with the numbersused in the tools and equipment columnof the maintenance allocation chart. Thenumbers indicate the applicable tool forthe maintenance function.
b. Maintenance Category. The codes inthis column indicate the maintenance cate-gory normally allocated the facility.
c. Nomenclature. This column liststools, test, and maintenance equipment re-quired to perform the maintenance func-tions.
d. Federal Stock Number. This columnlists the Federal stock number of thespecific tool or test equipment.
e. Tool Number. Not used.
B-2 Change 2
e .
SECTION II. MAINTENANCE ALLOCATION CHART
TABLE 1. TOOL AND TEST EQUIPMENT REQUIREMENTS
TOOLS ANDEQUIPMENT
1
2
MAINTENANCECATEGORY
F,H,D
F,H,D
NOMENCLATURE
AN/PVS-3 (continued)
MULTIMETER TS-352B/U
TOOL KIT ELECTRONIC EQUIPMENT TK-100/G
FEDERALSTOCK
NUMBER
6625-242-5023
5180-605-0079
TOOL NUMBER
TM 11-5855-209-23
APPENDIX CORGANIZATIONAL AND DIRECT SUPPORT
MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS
Section I. INTRODUCTION
C-1. Scope
This appendix lists repair parts required for theperformance of organizational and direct sup-port of the AN/PVS-3 and AN/PVS-3A.
NOTENo special tools and test equipmentare required.
C-2. GeneralThis Repair Parts List is divided into the follow-ing sections:
a. Repair Parts for Organizational Mainte-nance - Section II. A list of repair parts autho-rized for the performance of maintenance at theorganizational level.
b. Repair Parts for Direct Support, GeneralSupport, and Depot Maintenance – Section III. Alist of repair parts authorized for the performanceof maintenance at direct support.
c. Index — Federal Stock Number Cross Refer-ence to Figure and Item Number or ReferenceDesignation – Section IV. A list of Federal stocknumbers in ascending numerical sequence, fol-lowed by a list of reference numbers in ascendingalphanumeric sequence, cross-referenced to theillustration figure number or reference designa-tion.
d. Index – Reference Designation Cross-Refer-ence to Page Number — Section V. A list of refer-ence designations cross-referenced to page num-bers.
C-3. Explanation of ColumnsThe following provides an explanation of columnsin the tabular lists:
a. Source, Maintenance, and RecoverabilityCodes (SMR).
(1) Source code indicates the selection statusand source for the listed item. Source codes are:
P
P2
P9
P10
M
A
X
Xl
X2
G
ExplanationRepair parts which are stocked in or supplied from
GSA/DSA or Army supply system and authorized foruse at indicated maintenance categories.
Repair parts which are procured and stocked for in-surance purposes because the combat or military es-esntiality of the end item dictates that a minimumquantity be available in the supply system.
Assigned to items which are NSA design controlled:unique repair parts, special tools, test, measuring anddiagnostic equipment, which are stocked and suppliedby the Army COMSEC logistic system, and which arenot subject to the provisions of AR 380-41.
Assigned to items which are NSA design controlled:special tools, test, measuring and diagnostic equip-ment for COMSEC support, which are accountableunder the provisions of AR 3S0-41, and which arestocked and supplied by the Army COMSEC logisticsystem.
Repair parts which are not procured or stocked, but areto be manufactured in indicated maintenance levels.
Assemblies which are not procured or stocked as such,but are made up of two or more units. Such componentunits carry individual stock numbers and descriptions,are procured and stocked separately and can be assem-bled to form the required assembly at indicated main-tenance categories.
Parts and assemblies which are not procured or stockedand the mortality of which normally is below that ofthe applicable end item or component. The failure ofsuch part or assembly should result in retirement ofthe end item from the supply system.
Repair parts which are not procured or stocked. Therequirement for such items will be filled by use of thenext higher assembly or component.
Repair parts which are not stocked. The indicated main-tenance category requiring such repair parts will at-tempt to obtain same through cannibalization. Wheresuch repair parts are not obtainable through cannibal-ization, requirements will be requisitioned, withaccompanying justification, through normal supplychannels.
Major assemblies that are procured with PEMA fundsfor initial issue only as exchange assemblies at DSUand GSU level. These assemblies will not be stockedabove DS and GS level or returned to depot supplylevel.
C-1
TM 11-5855-209-23
(2) Maintenance code indicates the lowestcategory of maintenance authorized to install thelisted item. The maintenance level codes are:Code ExplanationC Operator/CrewO Organizational MaintenanceF Direct Support MaintenanceH General Support MaintenanceD Depot Maintenance
(3) Recoverability code indicates whether un-serviceable items should be returned for recoveryor salvage. Items not coded are expendable. Re-coverability codes are:Code
R
S
T
U
Explanation
Repair parts and assemblies that are economically re-parable at DSU and GSU activities and normally arefurnished by supply on an exchange basis.
Repair parts and assemblies which are economicallyreparable at DSU and GSU activities and whichnormally are furnished by supply on an exchangebasis. When items are determined by GSU to beuneconomically reparable, they will be evacuated to adepot for evaluation and analysis before final disposi-tion,
High dollar value recoverable repair parts which aresubject to special handling and are issued on an ex-change basis. Such repair parts normaily are repairedor overhauled at depot maintenance activities.
Repair parts specifically selected for salvage by reclama-tion units because of precious metal content, criticalmaterials, or high dollar value reusable casings orcastings.
b. Federal Stock Number. Indicates the Federalstock number assigned to the item and will be usedfor requisitioning purposes.
c. Description. Indicates the Federal item nameand any additional description of the item requir-ed, The index number has been included as partof the description to aid in the location of “sameas” items. A part number or other reference num-ber is followed by the applicable five-digit Fed-eral supply code for manufacturers in parentheses.
d. Unit of Measure (U/M). A two-character alpha-betic abbreviation indicating the amount orquantity of the item upon which the allowancesare based, e.g., ft. ea, pr, etc.
e. Quantity Incorporated in Unit. Indicates thequantity of the item used in the AN/PVS-3 andAN/PVS-3A. A “V” appearing in this column inlieu of a quantity indicates that a definite quantitycannot be indicated. Subsequent appearances of
C-2
the same item in the same assembly are indicat-ed by the letters “REF.”
f. Allowances (15-Day Organizational Mainte-nance, 30-Day DS Maintenance.) Items authorizedfor requisition as required are identified by anasterisk in the allowance column.
g. Illustrations.(1) Figure number. Indicates the figure num-
ber of the illustration in which the item is shown.(2) Item number or reference designation.
Indicates the reference designation or item num-ber used to identify the item in the illustration.
C-4. Special Information
Identification of the usable on codes of this publi-cation are:Code Used on
1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . AN/PVS-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AN/PVS-3A
C-5. Location of Repair Partsa. This appendix contains two cross-reference
indexes (sec. IV and sec. V) to be used to locatea repair part when either the Federal stock num-ber, reference number (manufacturer’s part num-ber) or reference designation is known. The firstcolumn in each index is prepared in numerical oralphanumeric sequence in ascending order. Wherea Federal stock number is not listed, refer to thereference number (manufacturer’s part number)immediately following the Federal stock number.
b. When the Federal stock number or referencenumber is known, follow the procedures given in(1) and (2) below.
(1) Refer to the index of Federal stock num-bers (sec. IV) and locate the Federal stock num-ber or reference number. The Federal stock num-ber or reference number is cross-referenced to theapplicable figure and item number or referencedesignation.
(2) When the reference designation is deter-mined, refer to the reference designation index(sec. V). The reference designations are listed innumeric-alpha ascending order and are cross-ref-erenced to the page number on which they appearin the repair parts list (sec. II and III). Refer tothe page number noted in the index and locate thereference designation in the repair parts list(col. 7a, Repair Parts for Organizational Mainte-nance or col. 10b, Repair Parts for Direct Support,
General Support, and Depot Maintenance). If thedescription column indicates that it is a “SAMEAS” item, locate the first appearance of the itemby the index number referenced.
c. When the reference designation is known,follow the procedures given in b (2) above.
d. When neither the Federal stock number,reference number, nor reference designation isknown, identify the part in the illustration andfollow directions given in c above or scrutinize
TM 11-5855-209-23
column 3 of the repair parts list (sec. II and sec.III).
C-6. Federal Supply Code forManufacturers.Code Manufactur
80063 Army Electronics Command81348 Federal Specifications81349 Military Specifications96906 Military Standards
(Next printed page is C-5.)
C-3
TM 11-5855-209-23
SECTION II REPAIR PARTS FOR ORGANIZATIONAL MAINTENANCE
C-5, Change 3
C-6, Change 3
TM 11-5855-209-23
SECTION III REPAIR PARTS FOR DIRECT SUPPORT, GENERAL SUPPORT, AND DEPOT MAINTENANCE
C-7, Change 3
TM 11-5585-209-23
SECTION III REPAIR PARTS FOR DIRECT SUPPORT, GENERAL SUPPORT, AND DEPOT MAINTENANCE (continued)
C-8, Change 3
TM 11-5585-209-23SECTION III REPAIR PARTS FOR DIRECT SUPPORT, GENERAL SUPPORT, AND DEPOT MAINTENANCE (continued)
C-9, Change 3
TM 11-5585-209-23SECTION III REPAIR PARTS FOR DIRECT SUPPORT, GENERAL SUPPORT, AND DEPOT MAINTENANCE (continued)
C-10, Change 3
TM 11-5585-209-23SECTION III REPAIR PARTS FOR DIRECT SUPPORT, GENERAL SUPPORT, AND DEPOT MAINTENANCE (continued)
FEDERALSTOCKNUMBER
3110-131-70713110-131-70713110-294-26145120-198-53925305-087-30805305-087-30875305-087-30875305-239-78585305-239-78585305-239-78585305-239-78585305-448-46735305-448-46745305-682-80465305-682-80465305-682-80465305-682-80465305-812-57885305-812-57885305-812-57885305-812-57885305-880-68955305-880-68965305-960-74585310-087-30555310-087-30555310-087-30575310-087-30575310-087-30995310-420-06105310-880-93675310-935-90975315-434-57595315-807-79575315-844-56445315-844-56445315-880-89755320-582-32685320-582-33055330-437-73145330-802-13605330-935-92385330-935-92395340-078-70295340-880-78315340-880-78315355-087-27705355-087-27705355-409-81165355-409-81165360-415-22295360-433-24155360-433-24165360-433-24165365-415-92725365-419-46275855-054-84905855-054-85035855-054-85405855-087-15655855-133-87725855-134-62575855-134-62585855-156-49935855-167-76995855-167-77065855-245-84425855-245-84435855-245-8444
TM 11-5855-209-23
SECTION IV INDEX-FEDERAL STOCK NUMBER CROSS REFERENCE
TO FIGURE AND ITEM NUMBER OR REFERENCE DESIGNATION
FIGURENUMBER
3-43-4
3-43-2
3-43-4
3-2
3-23-23-23-2
3-4
3-43-23-23-43-4
3-43-2
3-23-23-2
3-4
3-43-43-4
3-43-43-43-23 - 33-2
3-22-12-23-23-23-23-2
3-2
ITEM NUMBER ORREF. DESIGNATION
LA4MP102514MP23H11A4H2231A2H23A2H31A2H41A2H5781MP41MP51MP651A2H73A2H81A2H9243A2A1H23A2A1H1212MP13MP31A4H10241A3MP4171A2A1H3152121A4H162175MP125H15MP3121735MP126MP16MP21A4H4221A4H1212961A4MP52031614323MP28231161A2A2MP32651
FEDERALSTOCKNUMBER
5855-245-84455855-245-04465855-409-09205855-409-81485855-409-81495855-409-81505855-409-81515855-409-81525855-433-23485855-633-23495855-433-23505855-433-23515855-925-01145930-937-21376135-491-52526135-056-76126640-597-67456850-295-76856850-295-76858030-081-23259150-754-2595
REFERENCENO.
MILA25457MILB543TYPE3STYLE
3CLASS3MILH9890TYPEXMILH9890TYPEXMILW530TYPEMILW530TYPE2ASCB635133-33SCB635133-33SCB635151
SCB635163SCB645751-809SCC607134SC-C-635144SC-B-635156SC-C-635169SC-C-635175SC-D-635053-1SCD635146-1SCD635146-2SCD635147SCD635147-2SCD635147-3SCD635149SCD635153-1SCD635153-2SCD635168-2SCD646781SCD646781
FIGURE ITEM NUMBER ORNUMBER REF. DESIGNATION
3-2
3-33-23-43-43 - 43-43-43-23-23-23-43-23-23-23-2
MFG.CODE
8134981349
81349813498134981349800638006380063
80063800638006380063800638006380063800638006380063800638006380063800638006380063800638006380063
FIG.NO.
3-3
3-4
3 - 33 - 33 - 33 - 33 - 3
2015181A4H131A4MP2511194132541911910MPl1MP101A2MP3lA2AlMPl1A4MP11
REF. DESIG.OR ITEM NO.
5MP135MP7
5MP85MP95MP115MP101MP8115MP4
3MP52H112131014
5MP1
2A12A1MP12A1MP23MP15MP55MP61A4A1MP16MP56MP6
C-11, Change 3
10
1
5MP2
TM 11-5855-209-23
SECTION V INDEX - REFERENCE DESIGNATION
CROSS REFERENCE TO PAGE NUMBER
REFERENCE PAGEDESIGNATION NUMBER
REFERENCE PAGEDESIGNATION
11MP41MP51MP61MP81MP101A2A1H1lA2AlH21A2A1H31A2A1MP1lA2H2lA2H31A2H41A2H51A2H71A2H81A2H91A2MP31A2A2MP31A3MP4
1A4H21A4H41A4H101A4H121A4H131A4H161A4A1MP11A4MP21A4MP51A4MP101A4MP12
2MP12A12A1MP22AlMP2
3H13MP1
3MP33MP5
C-5, C-6C-8C-8C-8C-8C-9C-6C-6C-6C-6C-6C-6C-6C-6C-7C-7C-7C-7C-6C-9
C-7C-7C-7C-7C-7C-8C-7C-7C-8C-8C-8C-5, C-9C-9C-9C-5, C-9C-9C-9C-5, C-9C-9C-5, C-9C-9C-9C-9C-5, C-9C-5, C-9
C-9C-5, C-9C-9C-9C-9C-9
C-10C-10C-10C-10C-10C-10C-10C-5, C-1OC-5, C-1O
C-12, Change 3
REFERENCEDESIGNATION
PAGE
*U.S.. GOVERNMENT PRINTING OFFICE: 1991 - 281-486/42502
NUMBER NUMBER
C-9C-9
C-9C-9
2H1
3
3MP2
55H15MP15MP25MP35MP45MP55MP65MP75MP85MP95MP105MP115MP125MP136MP16MP26MP56MP6MP1MP2
TM 11-5855-209-23
By Order of the Secretary of the Army:
Official:
KENNETH G. WICKHAM,Major General, United States Army,The Adjutant General.
HAROLD K. JOHNSON,General, United States Army,Chief of Staff.
THE METRIC SYSTEM AND EQUIVALENTS
PIN: 018621-005
