TM 9-2320-272-24-1
Table 2-2. Mechanical Troubleshooting (Contd).
MALFUNCTlON
TEST OR INSPECTION
CORRECTIVE ACTION
Step 4.
Check reservoir drainplug and valve for leaks.
a. Close valve.
b. Tighten drainplug.
END OF TESTING!
77. HYDRAULIC PUMP NOISY
Check hydraulic oil reservoir for proper fluid level (LO 9-2320-272-12),
Fill oil reservoir to proper fluid level if necessary (LO 9-2320-272-12).
END OF TESTING!
DUMP BODY (M929, M930)
WARNlNG
When dump body is in raised position, oil in filter system is under
pressure. Any movement of the control valve or leakage at the
hydraulic cylinder line or hose connection will cause dump body to
drop to subframe. Never work under dump body unless safety
braces are properly positioned.
78. DUMP BODY WILL NOT RAISE
Step 1. Check if PTO is engaged.
a . Engage PTO control (TM 9-2320-272-10).
b. If PTO does not engage, perform malfunction 68.
Step 2. Check all hydraulic lines for damage and leaks.
a. Tighten loose fittings.
b. Replace leaking or damaged hoses (para. 3-131).
NOTE
Assistant will help with step 3.
Step 3. Check control valve for proper operation and leaks (front winch).
a. While assistant operates winch control lever, observe control valve for proper operation.
b. Tighten loose fittings.
c. If control valve is defective, notify DS maintenance.
Step 4. Check control valve shaft movement.
If shaft does not move freely, notify DS maintenance.
Step 6. Inspect pump housing for leaks and signs of overheating when PTO is engaged.
a. Tighten loose fittings.
b. Notify DS maintenance.
END OF TESTING!
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