TM 9-2320-273-20
MALFUNCTION.
TEST OR INSPECTION.
CORRECTIVE ACTION.
1.
WINCH OPERATES IN ONE DIRECTION ONLY:
Step 1.
Inspect all oil lines for damage and leakage.
Replace lines (para 12-13).
Step 2.
Inspect directional control valve for leakage.
Tighten connections or replace valve (para 12-11).
Step 3.
Check winch motor for leakage and visible signs of overheating.
Replace winch motor (para 12-14).
Step 4.
Check to see if pilot orifice in winch brake valve is plugged.
Clean orifice.
2.
WINCH DOES NOT OPERATE IN EITHER DIRECTION:
Step 1.
Check all oil lines for damage and leakage.
Tighten loose connections and replace defective components.
Step 2.
Check pump inlet strainer and in line filter for clogging.
Replace filter element (para 12-9 and 12-10).
Step 3.
Check reservoir for proper oil level.
Fill to proper level (LO 9-2320-273-12).
Step 4.
Check pump for leakage and visible signs of overheating.
Replace pump (para 12-15).
Step 5.
Connect a pressure gage in line between each control valve and winch motor
(one at a time) and attempt to operate.
If pressure is normal (2350 psi maximum), refer winch to Direct
Support Maintenance for replacement.
12-3
Table 12-1. Winch Troubleshooting Procedures.
