Table 3-17. Hydrostarter - Loss of Accumulator Precharge (Nitrogen)

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Table 3-16. Hydrostarter - Starter Turns but Engine Does Not - 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 3-18. Hydrostarter - High Pressure in System (3500 psi or above) - Troubleshooting

TM 55-1905-219-14-3

Table 3-17. Hydrostarter - Loss of Accumulator Precharge (Nitrogen) - Troubleshooting (Continued).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. Loss of accumulator precharge (nitrogen) (Cont)

Step 2.

Check for defective air valve.

Release pressure in system by

opening relief valve on side of

hand pump. Loosen hex lock nut

on the nitrogen valve approximately

3/4 turn to release remaining

precharge before attempting to

remove valve from accumulator.

Replace the air valve. Refer

to Direct Support Maintenance.

Step 3.

Check for damaged seal ring between shell and end

cap.

Apply light oil on threaded end

of accumulator at end of the cap.

Bubbling of the oil indicates a

leak past the end cap seal. Refer

to Direct Support Maintenance.

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