Low oil pressure - TM-55-1905-220-14-30068

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

Low oil pressure

TM 55-1905-220-14-3

Table 3-10. Marine Gear Troubleshooting.

NOTE

Refer to paragraph 3-8 for all Marine Gear Maintenance unless otherwise specified.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Low oil pressure.

Step 1.

Check for partially clogged oil strainer.

Remove and clean oil strainer.

Step 2.

Check for stuck pressure regulation piston in selector valve assembly.

Remove selector valve assembly. Disassemble the valve, and clean the piston.

Step 3.

Check for broken piston rings in clutches.

Refer to Direct Support Maintenance.

Step 4.

Check for come-home setscrew loose or missing.

Refer to Direct Support Maintenance.

Step 5.

Check for damaged or worn oil pump assembly.

Remove oil pump assembly and replace if worn or damaged.

Step 6.

Check for incorrect linkage installation on selector valve assembly.

Adjust linkage so that selector valve stem is indexed properly by detent pin.

Step 7.

Check for clogged or plugged orifice in the orifice plate or the selector valve assembly.

Remove orifice plate cover. Clean parts.

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