B5.9G, B5.9LPG – Troubleshooting and Repair Manual – Lubricating or Transmission Oil in the Coolant

Symptom Tree  t108

This is symptom tree t108
Cause Correction

Bulk coolant supply is contaminated

Check the bulk coolant supply. Drain the coolant and replace with noncontaminated coolant. Replace the coolant filters. Refer to Procedure 008-018.

 

Lubricating oil cooler is malfunctioning

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

 

Torque converter cooler or hydraulic oil cooler is malfunctioning

Remove and inspect the cooler cores and o-rings. Refer to the OEM service manual.

 

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

Inspect the air compressor cylinder head and gasket. Refer to Procedure 012-103 and 012-104 and the Master Repair Manual, Holset® Air Compressors, Bulletin 3666121.

 

Cylinder head gasket is leaking

Check the cylinder head gasket. Refer to Procedure 002-004 or 002-021.

 

Cylinder head is cracked or porous

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

 

Cylinder block is cracked or porous

Inspect the cylinder block. Refer to Procedure 001-026.

 
Last Modified:  05-Jan-2004