TM-9-2320-361-34
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
MAY 1992
TM-9-2320-361-34 - Page 297 of 764
TM 9-2320-361-34
I
13-4. FIFTH WHEEL MAINTENANCE
THIS TASK COVERS:
a. Disassembly
c. Assembly
b. Cleaning and Inspection
INITIAL SETUP
APPLICABLE MODELS
M275A2
TOOLS
General mechanic’s tool kit
(Appendix B, Item 1)
Torque wrench, 3/4-in. dr. (Appendix B, Item 6)
Caliper, vernier (Appendix B, Item 9)
Lifting device
Four washers (Appendix F, Item 268)
Two screws (Appendix F, Item 212)
Two locknuts (Appendix F, Item 99)
MATERIALS/PARTS
Cotter pin (Appendix F, Item 3)
Cotter pin (Appendix F, Item 5)
Two locknuts (Appendix F, Item 96)
Locknut (Appendix F, Item 97)
Locknut (Appendix
F,
Item 98)
Two lockwashers (Appendix F, Item 126)
Lockwasher (Appendix F, Item 127)
Safety wire (Appendix C, Item 30)
PERSONNEL REQUIRED
Two
REFERENCES (TM)
LO 9-2320-209-12-1
TM 9-2320-361-34P
EQUIPMENT CONDITION
Fifth wheel removed (TM 9-2320-361-20).
GENERAL SAFETY INSTRUCTIONS
.
All personnel must stand clear during lifting
operations.
. Eye protection must be worn when removing or
installing springs under tension.
●
Personnel must stand clear during release of
plunger rack.
I
a. Disassembly
1. Attach chain to fifth wheel housing (1) with four washers (2), two screws (5), and locknuts (3).
2. Attach lifting device to chain. Apply tension to chain.
3. Remove two lubrication fittings (4) from fifth wheel housing (1).
CAUTION
Do not use heat to remove pivot pins from fifth wheel housing.
Damage to equipment will result.
4. Remove two retaining pins (7) and pivot pins (8) from fifth wheel housing (1) and base (6).
WARNING
All personnel must stand clear during lifting operations. A
swinging or shifting load may cause injury or death to personnel.
5. Remove fifth wheel housing (1) from base (6).
●
●
6.
Position fifth
NOTE
Assistant will help with step 6.
Fifth wheel housing must be 6 in. (15.2 cm) above workbench for
bushing removal.
wheel housing (1) on workbench with trailer mating surface (9) side down.
13-12
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