Troubleshooting Symptoms Charts
B3.9 and B5.9 Series Engines
Section TS - Troubleshooting Symptoms
Lubricating Oil Contaminated
This is symptom tree T103.
Coolant in the lubricating oil, internal engine
Refer to Coolant Loss and Coolant in Lubricat-
ing Oil symptom tree.
Refer to the Lubricating Oil Sludge in the
ubricating oil sludge is excessive
Refer to the Fuel in Oil symptom tree. If
nothing is found, change the oil. Refer to
ubricating oil is contaminated with coolant or
Procedure 007-025. If the oil becomes diluted
again, contact an Authorized Cummins Repair
Remove and cut filter open. Refer to Proce-
dure 007-013. Check pistons for scuffs. Refer
etal in oil
to Procedure 001-043. Check camshaft lobes
and tappets for wear. Refer to Procedure
001-008 or 004-015.