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 TM 55-1905-220-14-3
Table 3--5. Propulsion Engine - High Lubricating Oil Consumption
Troubleshooting (Cont).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
Internal leaks (Cont).
Step 2.
Check oil cooler core for leaking.
Inspect the engine coolant for lubricating oil contamination; if contaminated, replace the oil
cooler core. Then use a good grade of cooling system cleaner to remove the oil from the
cooling system. Refer to paragraph 3-17.
3.
Oil control at cylinder.
Step 1.
Check for oil control rings that are worn, broken or improperly installed.
Replace the oil control rings.
Refer to paragraph 3-40.
Step 2.
Check piston pin retainer for looseness.
Replace the piston pin retainer and defective parts.
Refer to paragraph 3-40.
Step 3.
Check for scored liners, pistons or oil rings.
Remove and replace the defective parts.
Refer to paragraph 3-40.
Step 4.
Check piston and rod alignment.
Check the crankshaft thrust washers for wear. Replace worn and defective parts. Refer to
paragraph 3-40.
Step 5.
Check for excessive oil in crankcase.
Fill the crankcase to the proper level only.
3-46
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