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 TM 55-1905-219-14-3
Table 3-54. Anchor Winch - Hydraulic Tank Pressure
Control Valves Troubleshooting.
NOTE
Refer to paragraph 3-137 for all maintenance procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
Erratic Pressure.
Step 1.
Inspect for foreign matter in system.
Drain, flush and refill system with clean fluid.
Step 2.
Inspect for worn spool or plunger.
Replace spool and plunger.
Step 3.
Check plunger or spool for sticking in body or cover.
Clean. Remove burrs by light lapping. Check freedom of movement on reassembly.
Replace if necessary.
2.
Low pressure or no pressure.
Step 1.
Check for improperly adjusted valve.
Adjust valve to proper setting.
Step 2.
Check for spool not seating.
Back off adjusting screw several turns while running pump to be certain foreign
matter is not caught on the seat. Check condition of covers, spring spool,
spring plug, and plunger, if malfunction persists.
3.
Excessive noise or chatter.
Step 1.
Check for high oil velocity through valve.
Check system.
Step 2.
Inspect for distorted control spring.
Replace spring.
3-167
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