Pinpoint Test B: Clutch Chatter Or Shudder
- B1: TEST CLUTCH CHATTER OR SHUDDER NOTE:
- If a new clutch assembly is installed in the unreleased position, some clutch judder may be experienced.
- If a new clutch assembly is installed, the new unit should be bedded-in (this may be accomplished through 1 hour of in-town driving or similar).
- Start the engine and engage 1st gear
- Increase the engine speed to between 1200 and 1500 rpm
- Release clutch pedal slowly
Does the vehicle jerk when it starts off?
Yes
GO to B2
No
Clutch performing normally
- B2: TEST ENGINE/TRANSMISSION MOUNTINGS
- Check the integrity of the engine and transmission mountings
Are the engine/transmission mountings loose or damaged?
Yes
Tighten the bolts or install new engine/transmission mountings as necessary. Test the system for normal operation
No
GO to B3.
- Check the integrity of the engine and transmission mountings
- B3: TEST CLUTCH COVER ASSEMBLY
- Remove the clutch cover assembly
Does the clutch cover assembly have signs of wear or damage?
Yes
Install a new clutch assembly
No
GO to B4
- Remove the clutch cover assembly
- B4: TEST CLUTCH DRIVEN PLATE
- Check the clutch driven plate
Is the clutch driven plate oil-fouled or does it have burn marks?
Yes
Install a new clutch assembly
No
Check the flywheel
- Check the clutch driven plate