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

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Table 3-5. Propulsion Engine - High Lubricating Oil Consumption Troubleshooting-cont.

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

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

TM 55-1905-219-14-3

Table 3-6. Propulsion Engine - Excessive Crankcase Pressure

Troubleshooting

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. Cylinder blow-by.

Step 1.

Check cylinder head gasket for leaking.

Check the compression pressu e 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.

3-49