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 39 of 801
TM 9-2320-273-34
Table 2-10. Winch Troubleshooting Procedures (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Check cleanliness of inlet strainer.
a.
Remove and clean. (Refer to TM
9-2320-273 -20.)
b.
If problem remains, go to step
3.
Step 3.
Check pump inlet lines for blockage.
a.
Remove lines, clean, and inspect.
b.
If problem remains, go to step 4.
Step 4.
Check for defective or worn pump.
Repair pump (para 20-4).
8. WINCH DRUM LEAKS LUBRICATING OIL.
Step 1.
Check winch drum seal and gaskets.
a.
Disassemble drum (para 20-3). Remove and replace seal and all gaskets.
b.
Inspect bronze bushing (1, fig. 20-22).
9.
WINCH DRUM LEAKS HYDRAULIC OIL.
Check for defective hydraulic motor front seal.
a.
Completely drain winch lube from drum.
b.
Remove hydraulic motor and fail safe brake (para 20-3).
c.
Replace front shaft seal in hydrauIic motor.
d.
Disassemble and clean the internal brake parts with a solvent to remove all oil.
Allow to dry and reassemble.
e.
Reassemble winch and fill drum with lubricant (Refer to LO 9-2320-273 -12.)
10.
WINCH WILL NOT OPERATE IN HIGH SPEED.
Step 1.
Check to make sure that the high speed valve is shifting (possible loose handle).
a.
Inspect handle for tightness and tighten, if necessary.
b.
Move handle through both detented positions to determine that valve is shifting.
2-23
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