Symptom Tree t027
| Cause | Correction |
|---|
|
Crankcase ventilation system is plugged |
Check and clean the crankcase breather and vent tube. Refer to Procedures 003-002 and 003-018. |
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|
Air compressor is malfunctioning |
Isolate the air compressor by disconnecting the air inlet and outlet lines. Refer to Procedure 012-003. Check blowby. If blowby is within specifications, rebuild or replace the air compressor. |
|
|
Exhaust or engine brake is malfunctioning |
Check the exhaust or engine brake for correct operation. Refer to Procedure 020-004. |
|
|
Turbocharger oil seal is leaking |
Check the turbocharger compressor and turbine seals. Refer to Procedure 010-033. |
|
|
Valve stem clearance is excessive or the valve stem seals are damaged |
Check the valve stems and seals. Refer to Procedure 002-004. |
|
|
Cylinder head valve guides are excessively worn |
Check the valve guides for wear. Replace the cylinder head if necessary. Refer to Procedure 002-004. |
|
|
Cylinder liner, pistons, or piston rings are worn or damaged |
Check the pistons, piston rings, and cylinder liner. Refer to Procedures 001-043 and 001-047. Check the pistons for correct part numbers. Refer to Control Parts List (CPL), Bulletin 3379133 or 4021327. |
