TM 9-2320-272-24-1
Table 2-2. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
79. DUMP BODY WILL NOT LOWER
Step 1. Check for raised safety braces under dump body.
Lower and stow safety braces (TM 9-2320-272-10).
NOTE
Assistant will help with step 2.
Step 2. 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.
END OF TESTING!
80. DUMP BODY WILL NOT HOLD IN RAISED POSITION
Step 1. Check all hydraulic lines for damage and leaks.
a. Tighten loose fittings.
b. If hoses are cracked or leaking, notify DS maintenance.
Step 2. Check control valve shaft movement.
If shaft does not move freely, notify DS maintenance.
END OF TESTING!
81. 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!
82. TAILGATE WILL NOT OPEN
Check for bent or broken linkage.
If bent or broken, replace linkage (para. 3-349).
END OF TESTING!
EXPANSIBLE VAN (M934, M935)
83. SIDE PANELS HARD TO RETRACT OR EXPAND
Step 1. Check for dirt and other foreign material in sprocket assembly.
a. Clean and lubricate sprocket assembly (LO 9-2320-272-12).
b. If sprocket will not turn or engage properly, notify DS maintenance.
Step 2. Check for corroded, dirty, and damaged rollers.
Clean corroded or dirty rollers. If damaged, notify DS maintenance.
END OF TESTING!
84. SIDE PANEL CANNOT BE LOCKED IN RETRACTED POSITION
Step 1. Visually inspect front edge of side panel to see if it is retracted.
Place heavy block of wood (2 in. x 4 in., or 4 in. x 4 in.) against rub rail at front of panel,
Strike block with heavy hammer.
2-90
