TM 9-2320-260-34-2
13-5. FIFTH WHEEL MAINTENANCE (M819)
THIS TASK COVERS:
Assembly
c.
a. Disassembly
b. Cleaning and Inspection
INITIAL SETUP
PERSONNEL REQUIRED
APPLICABLE MODELS
M819
Two
REFERENCES (TM)
TOOLS
LO 9-2320-260-12
Outside micrometer (Appendix B, Item 1)
TM 9-2320-260-20
Arbor press (Appendix B, Item 7)
TM 9-2320-260-34P-1
Torque wrench. 1/2-in. dr.
(Appendix B, Item 3)
EQUIPMENT CONDITION
Inside micrometer (Appendix B, Item 9)
Fifth wheel removed (M819) (TM 9-2320-260-20).
Lifting device
Four washers (Appendix C, Item 56)
GENERAL SAFETY INSTRUCTIONS
TWO screws (Appendix C, Item 33)
All personnel must stand clear during lifting
Two nuts (Appendix C, Item 24)
operations.
Chain
Ensure lifting capacity is greater than weight of
MATERIALS/PARTS
fifth wheel.
Two cotter pins (Appendix D, Item 24)
Eye protection must be worn when removing or
Cotter pin (Appendix D, Item 22)
installing springs under tension.
Locknut (Appendix D, Item 184)
Personnel must stand clear during release of
Two locknuts (Appendix D, Item 170)
plunger.
Lockwasher (Appendix D, Item 223)
Eye protection is required when using wire brush
Two lockwashers (Appendix D, Item 218)
for cleaning.
Safety wire (Appendix D, Item 372)
Keep fire extinguisher nearby when using
Drycleaning solvent (Appendix C, Item 48)
drycleaning solvent.
NOTE
Assistant will help with entire procedure.
a. Disassembly
1.
Attach chain to fifth wheel housing (3) with four washers (2), two screws (1), and nuts (4).
2.
Attach lifting device to chain. Apply tension to chain.
3.
Remove two lubrication fittings (6) from lateral pivot shaft (5).
4.
Remove nut (8), lockwasher (10), and screw (11) from walking beam (9) and lateral pivot shaft (5).
Discard lockwasher (10).
CAUTION
Do not use heat to remove pivot shaft, from fifth wheel housing.
Damage to equipment may result.
5. Remove lateral pivot shaft (5) from walking beam (9) and fifth wheel housing (3).
WARNING
All personnel must stand clear during lifting operations.
A swinging or shifting load may cause injury to personnel.
Ensure lifting capacity is greater than weight (600 lb (272 kg)) of
fifth wheel. Failure to do so may result in injury to personnel or
damage to equipment.
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