Operation and maintenance manual

Troubleshooting Symptoms Charts QSB4.5 and QSB6.7
Page TS-56 Section TS - Troubleshooting Symptoms
Lubricating Oil Loss
Cause Correction
STEP 9
Turbocharger oil seal is leaking
.............
Check the turbocharger for oil seals and for leaks.
Refer to the Turbocharger Leaks Engine Oil or
Fuel symptom tree.
OK
Go To Next Step
STEP 10
Contact a Cummins® Authorized Repair Facility