TM 9-2320-260-20
Table 2-2. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTWE ACTION
59. DUMP BODY DOES NOT HOLD IN RAISED POSITION
Step 1. Check hydraulic oil reservoir for proper level.
Fill to proper level if necessary (LO 9-2320-260-12).
Step 2. Check all hydraulic lines for leaks and breaks.
a. Tighten loose fittings.
b. If broken, notify your supervisor.
Step 3. Check control valve for leaks and damage.
a. Tighten loose fittings.
b. Replace if damaged, notify your supervisor.
END OF TESTING!
60. DUMP BODY WILL NOT LOWER
Perform malfunction 58.
END OF' TESTING!
61. TAlLGATE DOES NOT OPEN
Check for bent or broken linkage.
Replace if bent of broken (para. 12-13).
END OF TESTING!
TRACTOR BODY (M818)
62. TRAILER WILL NOT HITCH TO FIFTH WHEEL
Step 1. Check fifth wheel for proper lubrication.
Lubricate if necessary (LO 9-2320-260-12).
Step 2. Inspect coupling jaws for bends and breaks.
Replace fifth wheel if coupling jaws are bent or broken (para. 10-14).
END OF TESTING!
EXPANSIBLE VAN BODY (M820, M820A1, M820A2)
63. SIDE PANELS HARD TO RETRACT OR EXPAND
Step 1. Check for dirt or other foreign material in sprocket assembly.
Clean and lubricate sprocket assembly (LO 9-2320-260-12).
Step 2. Check for dirt in rollers.
Clean dirt from rollers.
Step 3. Check operation of expanding and retracting mechanism(s).
Replace if defective. Notify your supervisor.
END OF TESTING!
64. SIDE PANEL CANNOT BE LOCKED IN RETRACTED POSITION
Step 1. Inspect edges of side panel to see if it is fully retracted.
--
Place heavy block of wood (2 in. x 4 in. or 4 in. x 4 in.) against edges of panel. Strike block
with heavy hammer.
Step 2. Inspect side panel locks for bent, worn, or damaged parts.
Replace bent, worn, or damaged parts (para. 12-26).
END OF TESTING!
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