3.9 and B5.9 Series Engines
Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms
Engine Noise Excessive (Continued)
Check the accessory drive axial end play.
Accessory drive is worn (axial end play is out
Inspect the shaft for wear.Refer to Procedure
Refer to the Coolant Temperature Above
oolant temperature is above specification
Normal - Gradual Overheat symptom tree.
Disconnect the drivetrain. Check for engine
rivetrain noise is excessive
noise. Refer to the OEM service manual.
ngine mounts are worn, damaged, or not
Check the engine mounts. Refer to the OEM
service manual and Procedure 016-003.
Measure and adjust the overhead settings.
verhead adjustments are not correct
Refer to Procedure 003-004.
Inspect the rocker levers, rocker shafts, and
valves for damage or excessive wear. Refer to
verhead components are damaged
Perform the single-cylinder cutout test. Re-
njector is malfunctioning
place the injectors as necessary. Refer to
Procedure 006-026 or 014-008.
Refer to the Engine Noise Excessive - Turbo-
charger symptom tree.
Refer to the Engine Noise Excessive symptom
ombustion noise excessive