TM 9-2330-390-14&P
4-32. TROUBLESHOOTING SYMPTOM INDEX (Con’t).
Troubleshooting
Procedure
Page
HYDRAULIC SYSTEM
Hydraulic System Will Not Operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lift Cylinder(s):
Drifts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Will Not Operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Positioning Cylinder Will Not Operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-38
4-39
4-39
4-39
TIRES
Abnormal Wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-38
Uneven Wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-38
Table 4-2. UnIt Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM
1.
ALL LAMPS (FRONT AND REAR DOLLIES) FAIL TO LIGHT.
When performing a continuity test, always disconnect intervehicular cable from towing
vehicle and circuit to be tested. Failure to follow this caution may damage multimeter.
NOTE
Refer to electrical wiring diagrams for assistance (see paragraph 4-50).
Step 1.
Troubleshoot towing vehicle electrical system. Ensure that there is power (12 v of 24 v) at pins of
trailer receptacle (see towing vehicle Unit Maintenance Manual).
Repair or replace damaged components (see towing vehicle Unit Maintenance Manual).
Step 2.
Disconnect Intervehicular cable from towing vehicle and signal conditioning box (see
paragraph 2-7). Check for damage to receptacle connectors at signal conditioning box.
Replace damaged receptacle connectors (see paragraph 4-34).
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