LOSS OF ACCUMULATOR PRECHARGE (NITROGEN).

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LOSS OF FLUID FROM RESERVOIR

TM-55-1905-221-14-1 Landing Craft Mechanized Steel DED Overall Length 74 Feet Mod 1 Mark VIII Navy Design LCM-8 Manual

STEERING WHEEL DIFFICULT TO TURN.

TM 55-1905-221-14-1

Table 4-1. Troubleshooting (Continued).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 3. Check if check valves are leaking.

If caused by dirt, open relief valve (maximum of one (1) turn), and operate hand pump slowly for a few

minutes to wash particles out of check valves. If this is successful, clean ball seats in pump body and

replace balls and springs if necessary (para 4-41).

Step 4. Check if suction line is plugged.

Remove line and clean (para 4-40).

17. LOSS OF ACCUMULATOR PRECHARGE (NITROGEN).

Step 1. Check air valve.

Release pressure in system by opening relief valve on hand pump. Then depress air valve to release

remaining precharge before attempting to remove valve from accumulator. Replace air valve (para 4-

40).

Step 2. Check safety fuse.

Replace safety fuse and holder gaskets (para 4-40).

18. HIGH PRESSURE IN SYSTEM (3500 PSI OR ABOVE).

Check pressure gage.

Replace gage if necessary.

19. FLUID EMERGES FROM RESERVOIR FILLER CAP WHEN HYDRAULIC STARTER IS USED.

Step 1. Check for excessive fluid in reservoir.

Check fluid level after the accumulator is discharged. The fluid level should be approximately 2-1/2 in.

from the top of the filling tube.

Step 2. Check if filter in filler cap is dirty.

Clean with fuel oil and blow dry.

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