Table 126
Troubleshooting Test Steps
Values Results
1. Misreading Oil Level
A. Accurately measure the consumption of oil and fuel over a
period of 50 engine hours.
Oil level Result: The oil consumption is less than 0.08% of the fuel
consumption.
Oil consumption is within specification. Return the unit to
service
Result: The oil consumption is greater than 0.08% of the fuel
consumption.
Proceed to Test Step 2.
2. Oil Leaks
A. Check for evidence of oil leaks on the engine.
B. Check for evidence of oil in the coolant.
Oil leaks Result: An oil leak is identified.
Repair: Rectify the cause of the oil leak.
Result: Oil is present in the coolant.
Repair: Refer to Troubleshooting, “Coolant Contains Oil”.
No oil leaks are identified
Proceed to Test Step 3.
3. Engine Crankcase Breather
A. Check the engine crankcase breather for blockage or
restrictions.
B. Check for excessive oil from the outlet of the breather.
Breather Result: The engine crankcase breather is blocked or
restricted.
Repair: Clear the blockage or restriction.
Result: Excessive oil is ejected from the outlet of the
breather.
Repair: Investigate the cause of the excessive oil content in
the breather flow. If the breather filter element is saturated
with oil, replace the filter.
Result: No oil is ejected through the breather.
Proceed to Test Step 4.
4. Oil Level
A. Check for a high oil level in the engine.
Oil level Result: The oil level in the engine is high.
Repair: Make sure that the oil is not contaminated with fuel.
Refer to Troubleshooting, “Oil Contains Fuel”.
Make sure that the oil is not contaminated with coolant. Refer
to Troubleshooting, “Oil Contains Coolant”.
Remove the excess oil.
Result: The oil level is OK.
Proceed to Test Step 5.
(continued)
UENR4469-36 235
Symptom Troubleshooting
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