TM-9-2320-273-34
TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1980
TM-9-2320-273-34 - Page 37 of 801
TM 9-2320-273-34
Table 2-10. Winch Troubleshooting Procedures (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3.
WINCH MOTOR IS EXCESSIVELY NOISY.
Step 1.
Check for internal damage to hydraulic motor.
Repair motor (para 20-5).
4.
WINCH WILL NOT LIFT RATED LOAD.
Step 1.
Check hydraulic system to determine if problem is mechanical or hydraulic.
a.
Perform hydrauIic system test (para 20-13i) and inspect relief valve (by removing)
for foreign matter that may be holding relief valve open.
b.
If hydraulic system is the cause of the problem, repair or replace defective
components.
c.
If hydraulic system is OK, go to step 2.
Step 2.
Check condition of mechanical drive.
Disassemble drum (para 20-3) then remove and replace defective components.
Reassemble (para 20-11).
5.
WINCH WILL NOT HOLD SUSPENDED LOAD.
Step 1.
Check fail safe brake disk for oil.
a.
Remove brake (para 20-3) and disassemble (para 20-8). If oil exists, clean
and replace motor front seal.
b.
Inspect fail safe brake disk. If defective or worn excessively, replace disk.
2-21
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