TM-9-2320-260-34-2
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; VOLUME 2 OF 2
JULY 1994
TM-9-2320-260-34-2 - Page 37 of 863
13-5. FIFTH WHEEL MAINTENANCE (M819)
THIS TASK COVERS:
a. Disassembly
c.
Assembly
b. Cleaning and Inspection
INITIAL SETUP
APPLICABLE MODELS
PERSONNEL REQUIRED
M819
Two
TOOLS
REFERENCES (TM)
Outside micrometer (Appendix B, Item 1)
LO 9-2320-260-12
Arbor press (Appendix B, Item 7)
TM 9-2320-260-20
Torque wrench. 1/2-in. dr.
TM 9-2320-260-34P-1
(Appendix B, Item 3)
Inside micrometer (Appendix B, Item 9)
Lifting device
Four washers (Appendix C, Item 56)
TWO
screws (Appendix C, Item 33)
Two nuts (Appendix C, Item 24)
Chain
MATERIALS/PARTS
Two cotter pins (Appendix D, Item 24)
Cotter pin (Appendix D, Item 22)
Locknut (Appendix D, Item 184)
Two locknuts (Appendix D, Item 170)
Lockwasher (Appendix D, Item 223)
Two lockwashers (Appendix D, Item 218)
Safety wire (Appendix D, Item 372)
Drycleaning solvent (Appendix C, Item 48)
EQUIPMENT CONDITION
Fifth wheel removed (M819) (TM 9-2320-260-20).
GENERAL SAFETY INSTRUCTIONS
All personnel must stand clear during lifting
operations.
Ensure lifting capacity is greater than weight of
fifth wheel.
Eye protection must be worn when removing or
installing springs under tension.
Personnel must stand clear during release of
plunger.
Eye protection is required when using wire brush
for cleaning.
Keep fire extinguisher nearby when using
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.
13-14
TM 9-2320-260-34-2
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