Symptom Low oil pressure can cause any or all of the following: • Red ENGINE lamp • DTC 313 – Engine oil pressure below warning…

Symptom Oil contaminated with diesel fuel will cause the oil level in engine to increase. Cause • Leaking fuel injector or injector O-ring (A leaking…

Symptom Coolant contaminated with lube oil will have oil in the deaeration tank. Cause • Oil cooler Tools • Oil cooler pressure test plate •…

1. Install the radiator pressure tester on the deaeration tank and run engine at elevated idle. Monitor the pressure in      the system using…

1. Install EST and check for active and inactive DTCs related to engine coolant over-temp conditions. • If any DTCs remain relating to coolant over-temp…

1. Check coolant deaeration tank for contamination and correct fill level. • If coolant level is low, do step 2. • If coolant level is…

Symptom When the coolant temperature is above 107 °C (224°F), DTC 325 will be set and the control system will command less fueling. A power…

Symptom • Coolant residue at exhaust manifold flanges • Observation of coolant loss without engine overheating • Excessive white smoke from exhaust pipe on start…

Symptom Coolant contaminated with diesel fuel will have a diesel fuel odor. Cause • Leaking or cracked injector sleeve with injector O-ring failure • Cracked…

Symptom Occasionally, it may be noticed that more fuel is required to perform the same task as before. Cause Operator effect • Inaccurate record keeping…