Operation and maintenance manual

Troubleshooting Symptoms Charts QSB4.5 and QSB6.7
Page TS-48 Section TS - Troubleshooting Symptoms
Fuel in Coolant
Cause Correction
STEP 1
Bulk coolant supply is contaminated
.............
Check the bulk coolant supply. Drain the coolant
and replace with noncontaminated coolant.
Replace the coolant filters. Refer to Section 5.
OK
Go To Next Step
STEP 2
Contact a Cummins® Authorized Repair Facility