(Table 53, contd)
Troubleshooting Test Steps Values Results
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.
C. Check the centrifugal breather for a mechanical failure.
D. Check for oil around the crankcase breather pressure relief
valve.
Breather Result: The engine crankcase breather is blocked or
restricted.
Clear the blockage or restriction.
Result: Excessive oil is ejected from the outlet of the breather.
Investigate the cause of the excessive oil content in the breath-
er flow. If necessary, replace the element in the breather. Refer
to Operation and Maintenance Manual, “Engine Crankcase
Breather Element - Replace”.
Result: There is oil around the crankcase breather pressure
relief valve.
Refer to Troubleshooting, “Crankcase Breather Ejects Oil”.
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.
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.
5. Air Intake and Exhaust System
A. Check the air filter restriction indicator, if equipped.
Check the air intake and the exhaust system for the following
defects:
· Blockages
· Restrictions
· Damage to the air intake and exhaust lines and hose
Air intake and
exhaust system
Result: The air filter restriction indicator has operated or the
air filter is blocked.
Make sure that the air filter is clean and serviceable. If neces-
sary, replace the air filter.
Result: The air intake or the exhaust system is blocked, re-
stricted, or damaged.
Repair the air intake or the exhaust system, as required.
Result: The air intake or the exhaust system is OK.
Proceed to Test Step 6.
(continued)
108 UENR0612
Symptom Troubleshooting
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