Excessive noise or chatter

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Table 3-54. Anchor Winch - Hydraulic Tank Pressure Control Valves Troubleshooting.

TM-55-1905-219-14-3 Landing Craft Utility (LCU) 1667 Class Boston Hull Numbers 1667-1670 NSN 1905-00-168-5764 Manual

Table 3-55. Anchor Winch Hydraulic Tank Pressure Reducing Valves Troubleshooting (Cont).

TM 55-1905-219-14-3

Table 3-54. Anchor Winch Hydraulic Tank Pressure

Control Valves Troubleshooting (Cont).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Excessive noise or chatter (Cont).

Step 3.

Inspect for worn spool or plunger.

Replace spool or plunger.

Step 4.

Check that valve setting is too close to that of system operating pressure.

Set to operate at 1000 psi (6895 kpa).

Table 3-55. Anchor Winch Hydraulic Tank Pressure

Reducing Valves Troubleshooting.

NOTE

Refer to paragraph 3-124 for all maintenance procedures.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Erratic Pressure.

Step 1.

Check for foreign matter in system.

Drain, flush and refill system with clean fluid.

Step 2.

Inspect for worn piston or seat in cover.

Replace piston and seat.

Step 3.

Check piston for sticking in cover.

Clean piston. Remove burrs by light lapping. Check freedom

of movement on reassembly. Replace if necessary.

3-168