MECHANICAL SPECIALTIES, LLC. MODEL 909 CARGO HOOK · model 909 cargo hook overhaul manual msi-mnl021 revision i/r 6/12/2018 . msi-mnl020, revision ir, dated june 12, 2018 i revision

MSI-MNL020, Revision IR, dated June 12, 2018

MECHANICAL SPECIALTIES,

LLC.

MODEL 909

CARGO HOOK

OVERHAUL MANUAL

MSI-MNL021 REVISION I/R 6/12/2018


I

REVISION HISTORY

DATE DESCRIPTION REVISION LEVEL

6/12/2018 INTIAL RELEASE REV. I/R

LIST OF EFFECTIVE PAGES

DATE PAGES

6/12/2018 ALL


II

AIRWORTHINESS LIMITATIONS

THE AIRWORTHINESS LIMITATIONS SECTION IS FAA APPROVED AND

SPECIFIES INSPECTIONS AND OTHER MAINTENANCE REQUIRED UNDER 43.16 AND

91.403 OF THE FEDERAL AVIATION REGULATIONS UNLESS AN ALTERNATIVE

PROGRAM HAS BEEN FAA APPROVED.

NO AIRWORTHINESS LIMITATIONS ARE ASSOCIATED WITH THIS

SUPPLEMENTAL TYPE DESIGN CHANGE


III

TABLE OF CONTENTS

PARAGRAPH SUBJECT PAGE

REQUIRED TOOLS 1

1.0 DISASSEMBLY 2

2.0 SERVICE AND INSPECTION 2

3.0 REASSEMBLY 4

4.0 TESTING 4

PARTS LIST 5

HOOK IPB 7

HOOK LOADING 10


PAGE 1 OF 10

REQUIRED TOOLS

DISASSEMBLY & REASSEMBLY:

FLATHEAD SCREWDRIVER

PHILLIPS SCREWDRIVER

3/8” BOX OR OPEN END WRENCH

3/8” SOCKET WRENCH








3/4" SOCKET WRENCH



TORQUE WRENCH

3/32” PUNCH

OVERHAUL:

909-OH OVERHAUL KIT

ARBOR OR SIMILAR TYPE PRESS

LUBRIPLATE 130AA OR EQUIVALENT LITHIUM GREASE

TESTING:

24 VOLT DC POWER SUPPLY

18,000 LB. CAPACITY LOAD TEST CELL

VOLT – OHM METER

TORQUE VALUES

TORQUE 10-32 THREADED FASTENERS TO 20-25 IN LBS.

TORQUE 1/4-28 THREADED FASTENERS TO 50-70 IN LBS.





PAGE 2 OF 10

1.0 DISASSEMBLY

1.1 REMOVAL OF SIDEPLATE TO ACCESSS INTERNAL MECHANISM.

* REMOVE ALL SAFETY WIRE.

* LAY HOOK ON TABLE, SOLENOID COVER SIDE DOWN.

* REMOVE 6060-1 MANUAL RELEASE KNOB (21)

* USE PUNCH TO REMOVE ROLL PIN (68).

* REMOVE 6148-1 LEVER (19)

* REMOVE COTTER PINS (69)

* REMOVE NUT (58) AND WASHER (59), BOTH SIDES OF HOOK.

* REMOVE NUT (52) AND WASHER (60), LEAVE BOLT (38) IN PLACE.

* REMOVE BOLTS (39, 40, 41, 42 AND 43)

* REMOVE SCREW (45) (4 PLACES)

* REMOVE 9053-1 SIDE PLATE (9) WITH ROCKING MOTION.

2.0 SERVICE AND INSPECTION

2.1 INSPECTION-

CLEAN ALL PARTS IN CLEANING SOLVENT AND DRY WITH AIR. INSPECT THE CARGO

HOOK PARTS IN ACCORDANCE WITH TABLE 1.

TABLE 1

ITEM METHOD REMARKS

OF INSPECTION

BOLTS VISUAL CHECK FOR CROSS, DEFORMED, OR

BROKEN THREADS.

SPRINGS VISUAL CHECK FOR BROKEN COILS,

(30, 31) DEFORMED ENDS.

BEARINGS VISUAL CHECK FOR FREEDOM OF ROTATION,

(1B, 1C) BINDING, EXCESSIVE WEAR.

BUSHINGS VISUAL CHECK FOR EXCESSIVE WEAR.

(8, 15) (SEE NOTE 1)

LOAD BEAM VISUAL CHECK FOR WEAR, TWISTING, AND

(4) BENDING. CHECK FOR WEAR ON TIP

OF LOAD BEAM (4) WHERE IT CONTACTS

ROLLER (3B). (SEE NOTE 2)

LATCH & ROLLER VISUAL CHECK FOR EXCESSIVE WEAR, AND (3A, 3B)

BURRS WHERE LATCH (3A)

CONTACTS BEARING (1C), AND WHERE

ROLLER (3D) CONTACTS LOAD BEAM (4),

(SEE NOTE 3).INSURE ROLLER (3D) ROTATES

FREELY.


PAGE 3 OF 10

TABLE 1 (CONTINUED)

SHAFT & ARM ASSY. VISUAL CHECK FOR WEAR OR BENDING.

(11)

PINS VISUAL CHECK FOR WEAR OR BENDING.

(13, 14, 28, 29, 33)

TRUNNION VISUAL CHECK FOR WEAR OR BENDING.

(4B) (SEE NOTE 3)

TABLE 1 NOTES

NOTE 1-- BUSHING (8, 15) BORE DIAMATER TOLERANCES.

ACCEPTABLE-----.751-.760 I.D.

NOTE 2-- IF WEAR IS LESS THAN .02” DEEP, A LIGHT SMOOTHING WITH FINE EMERY

CLOTH OR FILE IS PERMISSIBLE.

NOTE 3-- TOLERANCE WHERE TRUNNION (4B) MATES WITH BUSHING (15).

ACCEPTABLE-----.747-.742 O.D.


PAGE 4 OF 10

3.0 REASSEMBLY

7.1 REASSEMBLE THE HOOK IN THE REVERSE ORDER OF DISASSEMBLY, NOTING THE

FOLLOWING PROCEDURES:

*ASSEMBLE ALL MOVING PARTS (EXCLUDING BUSHING 15) WITH LUBRIPLATE 630-AA

OR EQUIVALANT GREASE.

*WARNING- IMPROPER ASSEMBLY OF THE CARGO HOOK CAN RESULT IN INJURY

OR DEATH OF PERSONNEL.

4.0 TESTING

7.1 ELECTRICAL CHECK-

PLACE THE LEADS OF A VOLT-OHM METER ACROSS THE LEADS OF THE

SOLENOID (25), VERIFY THAT ELECTRICAL CONTINUITY EXISTS. ATTACH ONE LEAD

OF A VOLT-OHM METER TO ONE OF THE SOLENOID LEADS, AND THE OTHER

LEAD ON SIDEPLATE (7 OR 9) AND INSURE THAT CONTINUITY

DOES NOT EXIST.

7.2 LOAD TESTING-

PLACE HOOK IN LOAD TEST CELL, APPLY LOAD OF 18,000 LBS TO LOAD BEAM.

HOLD THIS LOAD FOR 30 SECONDS, GRADUALLY REDUCE LOAD.

DO NOT RELEASE HOOK AT THIS LOAD

PERFORM THE FOLLOWING LOAD RELEASES:

LOAD RELEASE METHOD REMARKS

7 LBS. 24 VDC *********

7 LBS. MANUALLY *********

5000 LBS. 24 VDC HOLD LOAD FOR 10 SECONDS

5000 LBS. MANUALLY “

9,000 LBS. 24 VDC “

9,000 LBS. MANUALLY “


PAGE 5 OF 10

909 PARTS LIST

ITEM NO. PART NO. DESCRIPTION 1 6008-100 LEVER ASSEMBLY

1A 6008-1 LEVER 1B MS24461-6 BEARING 1C 6NBF817YJ BEARING 1D 1071-1 BUSHING 1E 6027-1 PIN 1F 3117-1 PIN 2 9052-1 SPACER 3 6064-A1 LATCH ASSEMBLY

3A 6064-1 LATCH 3B 6064-2 LATCH ROLLER 3C 6064-3 ROLLER PIN 3D 6064-4 LATCH BUSHING 4 9104-100 LOAD BEAM ASSEMBLY

4A 9104-1 LOAD BEAM 4B 9067-1 TRUNNION 5 9081-1 SOLENOID COVER 6 9087-3 PLACARD 7 9051-1 SIDE PLATE 8 9058-1 BUSHING 9 9053-1 SIDE PLATE 10 6005-1 LINK 11 9054-101 SHAFT AND ARM 12 6158-A1 BUMPER 13 6006-1 PIN 14 6026-1 PIN 15 9066-1 BUSHING 16 9127-1 ABRASION PLATE 17 9127-3 ABRASION PLATE 18 9089-1 CABLE ASSY 19 6148-1 LEVER 20 9080-1 CABLE MOUNT 21 6060-1 KNOB 22 9085-1 COVER PLATE 23 9090-1 TRUNNION 25 6047-1 SOLENOID 26 500388-001 LOAD CELL TRUNNION 27 9022 WIRE HARNESS 28 6055-1 PIN 29 6057-1 PIN 30 6025-1 SPRING 31 3031-1 SPRING 32 9056-1 BOSS 33 6069-1 PIN 34 9064-1 LATCH STOP 35 6113-1 SOLENOID PIN 36 320555 KNIFE DISCONNECT


PAGE 6 OF 10

909 PARTS LIST (CONTINUED)

ITEM NO. PART NO. DESCRIPTION

38 NAS6210-32 BOLT, HEX HEAD

39 AN8-25A BOLT, HEX HEAD 40 AN7-24A BOLT, HEX HEAD

41 AN6-24A BOLT, HEX HEAD 42 AN4-23A BOLT, HEX HEAD 43 AN3-23A BOLT, HEX HEAD

45 MS24693S297 SCREW, FLAT HEAD 47 AN502-10-8 SCREW, PHILLISTER HEAD

48 MS35266-69 SCREW, PHILLISTER HEAD

49 MS35266-63 SCREW, PHILLISTER HEAD

50 MS35265-43 SCREW, PHILLISTER HEAD 51 MS27039C1 SCREW, PHILLISTER HEAD 52 MS21083N10 NUT, SELF LOCKING 53 MS20365-816L NUT, SELF LOCKING 54 MS20365-720L NUT, SELF LOCKING

55 MS20365-624L NUT, SELF LOCKING 56 MS20365-428L NUT, SELF LOCKING 57 MS20365-1032L NUT, SELF LOCKING 58 AN320-12 NUT, CASTELLATED 59 NAS1149F1232P WASHER, FLAT

60 NAS1149F1032P WASHER, FLAT 61 NAS1149F0832P WASHER, FLAT 62 NAS1149F0732P WASHER, FLAT 63 NAS1149F0632P WASHER, FLAT 64 NAS1149F0432P WASHER, FLAT

65 NAS1149FN316P WASHER, FLAT 67 92373A173 ROLL PIN 68 92373A217 ROLL PIN 69 MS24665-372 COTTER PIN 70 MS21044N4 NUT, SELF LOCKING

71 MS21318-1 DRIVE SCREW


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Documents

MECHANICAL SPECIALTIES, LLC. MODEL 909 CARGO HOOK · model 909 cargo hook overhaul manual msi-mnl021 revision i/r 6/12/2018 . msi-mnl020, revision ir, dated june 12, 2018 i revision