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ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – Coolant in the Lubricating Oil

Symptom Tree  t025

This is symptom tree t025
Cause Correction

Lubricating oil cooler is malfunctioning

Check the oil cooler. Refer to Procedure 007-003.
 

Air compressor cylinder head is cracked or porous, or has a leaking gasket

Inspect the air compressor cylinder head and gasket. Refer to Procedure 012-014.
 

Cylinder head core and expansion plugs leaking or misassembled

Check cylinder head. Refer to Procedure 002-004.
 

Cylinder head gasket is leaking

Check the cylinder head gasket. Refer to Procedure 002-021.
 

Cylinder head is cracked or porous

Pressure-test the cylinder head. Refer to Procedure 002-004.
 

Cylinder block is cracked or porous

Remove the oil pan. Pressure-test the cooling system to check for leaks. Refer to Procedure 008-020.
 
Last Modified:  29-Jul-2005
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