DEFINITION: Vibration from the clutch components during disengagement or engagement.

Review the Symptoms - Clutch and perform the necessary inspections.

Excessive driveline torsional activity

Review the Propeller Shaft Diagnosis in Propeller Shaft.

Clutch incorrectly installed

Remove the clutch and install it correctly. Refer to Clutch Assembly Replacement .

Pilot bearing worn or damaged

1. Replace the pilot bearing. Refer to Clutch Assembly Replacement .
2. Inspect the input shaft pilot bearing journal for wear or damage.
3. Replace the input shaft if it is damaged or worn. Refer to Input Shaft Disassemble or Input Shaft Assemble in Manual Transmission - Isuzu MLD6Q or the transmission manufacturers service manual

Transmission input splines worn or damaged

1. Inspect the clutch disc to input splines for wear or damage.
2. Replace the input shaft if the splines are excessively worn. Refer to Transmission Disassemble and Input Shaft Assemble in Manual Transmission - MLD6Q Isuzu or the transmission manufacturers service manual.

Clutch disc facings damaged

Replace the clutch assembly. Refer to Clutch Assembly Replacement .

Flywheel housing to the clutch housing excessive misalignment

Replace the faulty clutch housing. Refer to Clutch Housing Replacement .

Clutch out of balance

Replace the clutch assembly. Refer to Clutch Assembly Replacement .