Symptom Tree t122
Cause | Correction |
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Engine is operating for extended periods under light or no-load conditions (slobbering) |
Review the engine operating instructions. Refer to Section 1 in the Operating and Maintenance Manual ISM and ISM |
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Turbocharger is not correct |
Check the turbocharger part number and compare it to the Control Parts List (CPL), Bulletin 3379133 or 4021327. Replace the turbocharger if necessary. Refer to Procedure |
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Turbocharger oil drain line is restricted |
Remove the turbocharger oil drain line and check for restriction. Clean or replace the oil drain line. Refer to Procedure |
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Crankcase pressure is excessive |
Check for excessive blowby. Refer to Section 14 and the Crankcase Gases (Blowby) Excessive symptom tree. |
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Plugged engine breather or breather tube |
Clear any restrictions found and/or replace any damaged components in the breather system. If equipped, check the engine crankcase ventilation filter assembly for excessive restriction or blockage. Refer to Procedure |
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Turbocharger oil seal is leaking |
Check the turbocharger compressor and turbine seals. Refer to Procedure |