TM-9-2320-361-20

2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)

TECHNICAL MANUAL; UNIT MAINTENANCE

OCTOBER 1991
TM-9-2320-361-20

  TM-9-2320-361-20 - Page 130 of 1207

TM 9-2320-361-20
Table 2-2. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
FIFTH WHEEL
62. TRAILER WILL NOT HITCH TO FIFTH WHEEL
Inspect coupling jaws for bends and breaks.
If coupling jaws are broken or bent, replace fifth wheel (para. 12-113).
END OF TESTING!
DUMP BODY (M342A2)
WARNIN G
All personnel must stand clear during lifting operations. A snapped
chain, swinging or shifting load result in cause injury or death to
personnel.
63. DUMP BODY WILL NOT RAISE
Step 1. Check transmission PTO linkage for bends, breaks, or improper adjustment.
If transmission PTO linkage is bent, broken, or out of adjustment, replace or adjust
(para. 13-20).
Step 2. Check all hydraulic lines for leaks, cracks, and breaks.
a. Tighten any loose fittings or loose hose connections.
b. If hoses are cracked or leaking, notify your supervisor.
Step 3. Visually check control valve for leaks and damage.
If leaking or damaged, notify your supervisor.
Step 4. Inspect pump housing for leaks and overheating with PTO engaged.
If pump is defective, notify your supervisor.
Step 5. Check control box, linkage, and lock operation. Move main control levers in cab and observe
control box levers movement.
If control box lever, tailgate linkage, and lock will not operate, repair or replace (para.
12-11 or 12-12).
Step 6. Check hydraulic system for leaks.
If hydraulic hose fittings are leaking, notify your supervisor.
END OF TESTING!
64. DUMP BODY DOES NOT LOWER
Step 1. Check to ensure braces are not in raised position under dump body.
Lower and stow braces (TM 9-2320-361-10).
Step 2. Check control valve movement in and out.
If shaft will not move, notify your supervisor.
END OF TESTING!
65. DUMP BODY DOES NOT HOLD IN RAISED POSITION
Step 1. Check all hydraulic lines for leaks and cracks.
Tighten any loose connections.
If hoses are damaged, notify your supervisor.
Step 2. Check control valve for leaks.
If leaking, notify your supervisor.
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