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 TM 55-1905-220-14-10
Table 5-4. Anchor Winch - Slack Puller Fluid Motors Troubleshooting (Cont).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. Motor fal1s to start turning.
Step 1.
Insufficient torque.
Increase relief valve pressure setting.
Step 2.
Excessive motor leakage.
Check flow from motor outlet if excessive, check shuttle valve in front port plate. Pressure not
loading - plate causing plate to move away from rotor.
Step 3.
Defective "O" ring on O.D. of front port plate.
Cam ring worn; replace "O" ring if damaged.
Step 4.
Insufficient pump delivery.
Pump worn.
7. Shaft play.
Step 1.
Worn bearings.
Replace.
Step 2.
Hammering coupling on shaft.
Coupling bore should be slip fit on shaft.
8. Burst lines on motor housing.
Step 1.
Excessive pressure.
If high inertia load over runs motor, relief valve protection is required in one or possibly both
lines between directional valve and motor. Use closed center valve with caution. Relief valve
protection probably required as described above.
9. Excessive noise.
Step 1.
Worn or damaged internal parts.
Disassemble to remove rotor, vane, cam ring assembly. Inspect for excessive wear. Check
condition of faces of port plate and end cap. Rework (lap) or replace if scuffed.
5-8
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