3.9 and B5.9 Series Engines
Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms
This is symptom tree T033.
Verify the engine duty cycle with an electronic
service tool. Refer to the appropriate electronic
Engine duty cycle has changed
service tool manual or a Authorized Cummins
Explain the correct engine operation to the
operator. Refer to the Operation and Mainte-
perator technique is not correct
nance Manual, B Series Engine, Bulletin No.
Fill the supply tank. Refer to the Operation and
uel level is low in the tank
Maintenance Manual, B Series Engine, Bulletin
Check for correct gearing and drivetrain
rivetrain is not correctly matched to the
components. Refer to the OEM vehicle
Compare the drivetrain specifications to
Cummins recommendations. Check the clutch
lutch is malfunctioning or is not correct
for correct operation. Refer to the OEM service
Check the vehicle brakes for dragging,
transmission malfunction, cooling fan operation
ehicle parasitics are excessive
cycle time, and engine-driven units. Refer to
the OEM service manual.
Check the fuel lines, fuel connections, and fuel
filters for leaks. Refer to the OEM service
manual. Check the fuel lines to the supply
tanks. Refer to the OEM service manual.
Check for fuel inlet restriction. Refer to
uel inlet restriction
Procedure 006-020 .