Pinpoint Test B : Clutch Chatter, Rattle OR Shudder

Manual Transaxle and Clutch

Pinpoint Tests

PINPOINT TEST B : CLUTCH CHATTER, RATTLE OR SHUDDER

B1 CHECK THE ENGINE OR TRANSAXLE MOUNTS

- Inspect all the engine and transaxle mounts for looseness or damage.

Are any of the engine or transaxle mounts loose or damaged?

Yes
TIGHTEN or INSTALL new engine or transaxle mounts. TEST the system for normal operation.

No
GO to B2.

B2 INSPECT THE PRESSURE PLATE BOLTS

- Inspect the pressure plate-to-flywheel bolts.

Are any of the pressure plate-to-flywheel bolts loose?

Yes
TIGHTEN or INSTALL new bolts.

No
GO to B3.

B3 INSPECT THE PRESSURE PLATE

- Remove the clutch pressure plate.

- Inspect the clutch pressure plate for wear or damage.

Are any signs of damage present on the clutch pressure plate?

Yes
INSTALL a new clutch pressure plate. TEST the system for normal operation.

No
GO to B4.

B4 CHECK THE CLUTCH DISC

NOTE: If the internal damper of the clutch disc is damaged or contaminated with grease or oil, it will sound similar to a "transaxle rattle".

- Check the clutch disc for wear or damage.

Is the clutch disc OK?

Yes
GO to B5.

No
INSTALL a new clutch disc. TEST the system for normal operation.

B5 INSPECT THE FLYWHEEL

- Inspect the flywheel for wear or damage.

Is the flywheel OK?

Yes
GO to B6.

No
REPAIR or INSTALL a new flywheel as necessary. TEST the system for normal operation.

B6 INSPECT THE INPUT SHAFT

- Inspect the input shaft for signs of wear, damage or corrosion.

Are any signs of wear damage, or corrosion present on the input shaft?

Yes
If wear or damage is found, INSTALL a new input shaft. If corrosion is found on the splines of the input shaft, apply a small amount of grease to the splines of the input shaft.

No
VERIFY the customer concern. GO to Symptom Chart - Clutch Symptom Chart - Clutch, GO to Symptom Chart - Transaxle Symptom Chart - Transaxle, GO to Symptom Chart - NVH Symptom Chart - NVH if necessary.