B3.9 and B5.9 Series Engines
Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms
Coolant in the Lubricating Oil
This is symptom tree T025.
Check the lubricating oil cooler for coolant
Lubricating oil cooler is leaking
leaks and cracks. Refer to Procedure 007-003.
gasket. Refer to Procedure 012-019 and the
porous, or has a leaking gasket (nonmarine
Master Repair Manual, Holset Air Compres-
engines only )
sors, Bulletin No. 3666121.
Inspect and pressure-test the aftercooler for
ftercooler is leaking
leaks. Refer to Procedure 010-001.
Check the cylinder head gasket. Refer to
ylinder head gasket is leaking
Pressure-test the cylinder head. Refer to
ylinder head is cracked or porous
ylinder head core and expansion plugs
Check cylinder head. Refer to Procedure
leaking or misassembled
Inspect the cylinder block. Refer to Procedure
ylinder block is cracked or porous