Table 3-12. Hydrostarter - Cranking Speed Too Low

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Engine driven pump fails to raise pressure (Cont)

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

Cranking speed too low

TM 55-1905-219-14-3

Table 3-11. Hydrostarter - Low or No Accumulator Pressure - Troubleshooting (Cont).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. Engine driven pump fails to raise pressure (Cont).

b. If the accumulator can be

charged with the hand pump

but not with the engine-

driven pump, then a check

valve in the engine pump

is defective. Replace the

faulty check valve assembly.

Refer to paragraph 3-48.

Step 5.

Check for defective drive.

Replace the pump drive arm.

Refer to paragraph 3-48.

Table 3-12. Hydrostarter - Cranking Speed Too Low -

Troubleshooting.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. Cranking speed to low.

Step 1.

Check that hydrostarter system fluid is not too heavy.

Check the fluid in the system. Use Hydraulic Fluid MIL-L-17672 type 2135

TH.

Step 2.

Check that engine oil is not too heavy.

Replace the oil with the proper viscosity grade.

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