Table 3-6. Propulsion Engine - Excessive Crankcase Pressure Troubleshooting

Custom Search

Internal leaks (Cont).

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

Breather restriction

TM 55-1905-220-14-3

Table 3-6. Propulsion Engine - Excessive Crankcase Pressure

Troubleshooting.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Cylinder blow-by.

Step 1.

Check cylinder head gasket for leaking.

Check the compression pressure and, if only one cylinder has low compression, remove the

cylinder head and replace the head gaskets. Refer to paragraph 3-34.

Step 2.

Check for piston or liner damage.

Inspect the piston and liner and replace damaged parts. Refer to paragraph 3-40.

Step 3.

Check for piston rings that are worn or broken.

Install new piston rings. Refer to paragraph 3-40.

3-47