TM 5-2420-230-24-2
Troubleshooting Symptoms Charts
B3.9 and B5.9 Series Engines
Page TS-68
Section TS - Troubleshooting Symptoms
Lubricating Oil Contaminated
This is symptom tree T103.
Cause
Correction
Coolant in the lubricating oil, internal engine
Refer to Coolant Loss and Coolant in Lubricat-
.......
component leaks
ing Oil symptom tree.
OK
L
Refer to the Lubricating Oil Sludge in the
ubricating oil sludge is excessive
.......
Crankcase Is Excessive symptom tree.
OK
L
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
.......
fuel
again, contact an Authorized Cummins Repair
Facility.
OK
M
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.
L-652
