Loss of accumulator precharge (nitrogen) (Cont)

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Table 3-16. Hydrostarter - Starter Turns but Engine Does Not.

TM-55-1905-220-14-3 Landing Craft Unit LCU 1671-1679 (1905-01-009-1056) Manual

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

TM 55-1905-220-14-3

Table 3-17.

Hydrostarter - Loss of Accumulator Precharge (Nitrogen) Troubleshooting (Cont).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Loss of accumulator precharge (nitrogen) (Cont).

Step 2.

Check for defective air valve.

Release the pressure in the system by opening the relief valve on the side of the

hand pump. Then, loosen the hex lock nut on the nitrogen valve approximately 3/4

turn to release the remaining precharge before attempting to remove the valve

from the 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 the threaded end of the accumulator at the 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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