Table 3-68. Anchor Winch Engine - Low or No Accumulator Pressure

Custom Search

Table 3-67. Anchor Winch Engine Low or High Exhaust Valve Opening Pressure Troubleshooting.

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

Hydraulic Starting System Piping

TM 11-1905-219-14-3

Table 3-68. Anchor Winch Engine - Low or No Accumulator Pressure -

Troubleshooting.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. Engine-driven pump fails to raise pressure:

Step 1.

Check for air in system.

To purge the engine driven pump of air:

a. Operate the engine at maximum no-load engine speed.

b. Break the hose connection (1) on the pressure side of the engine-driven

pump until a full stream of oil is discharged from the pump.

c. Connect the hose to the pump and alternatelyloosen and tighten the

swivel fitting (2) on the pressure hose until the oil leaking out when the

fitting is loose appears free of air bubbles.

d. Tighten the swivel fitting (2) securely and observe the pressure gage.

The pressure must rise rapidly to the accumulator precharge pressure

(1250 psi at 70 ) (8274 kPa at 68.4 ). Then the pressure must

increase slowly to 2900 to 3300 psi (19996 to 22754 kPa) in 6 to 10

minutes, depending upon the size of the particular accumulator.

e. If the accumulator pressure does not rise, make certain that the hand

pump relief valve (3) is closed after the pressure is released and repeat

the above purging procedure.

3-209