Trouble Shooting Questions
- What could be the causes for clutch chatter?
- What could be the cause for improper clutch release?
- What are the possible causes for clutch slippage?
Q: What could be the causes for clutch chatter?
- Flywheel has excessive run-out.
- Fly wheel was not resurfaced before the new clutch was installed.
- Flywheel was resurfaced improperly or has improper surface finish.
- Flywheel has severe hard spots or hot spots.
- Flywheel resurfaced improperly (i.e. incorrect flywheel step).
- Damaged or excessively worn cv joints.
- Bad u-joints in drive shaft or u-joints misaligned.
- Excessive backlash in differential.
- Excessive driveline angle.
- Bad leaf springs, bushings or mounts.
- Improper gear ratio versus tire diameter.
- Defective pressure plate and/or disc.
- Disc has inadequate or no marcel (not enough cushion between the friction facings).
- Oil or grease contamination on clutch facings.
- Worn or damaged clutch linkage.
- Bent cover assembly and/or disc.
- Improperly tuned engine.
- Worn or damaged engine mounts or transmission mounts.
Q: What could be the cause for improper clutch release?
- Clutch linkage not properly adjusted or reset
- Flywheel not surfaced before new clutch installed.
- Flywheel surfaced improperly (i.e. incorrect flywheel step).
- Flywheel machined too thin or not manufactured to stock (O.E.M.) specifications.
- Linkage worn or damaged.
- Defective hydraulics, leaking, burnt fluid, or there may be air in the system.
- Cable stretched or damaged.
- Improper clutch fork geometry due to flywheel being too thin or bellhousing deeper than stock (bellhousing ball stud may not be adjusted properly).
- Pilot bushing binding due to improper bellhousing alignment, bellhousing damaged, or loose.
- Clutch disc installed improperly.
- Clutch disc hub rubbing against flywheel bolts.
- Clutch disc binding on input shaft.
- Input shaft bent causing clutch disc runout.
- Pressure plate assembly and/or clutch disc bent or damaged.
- Clutch disc is too thick/ or has excessive marcel (too much cushion between the friction facings).
- Pressure plate has defective or damaged torque drive straps.
- Damaged, worn, or improperly installed pilot bushing/bearing.
- Oil or grease contamination on clutch facings.
- Damaged or worn throwout bearing collar.
Q: What are the possible causes for clutch slippage?
- Improper clutch adjustment freeplay.
- Quadrant not reset properly or is faulty (on ratchet cable type linkage. systems).
- Incorrect throwout bearing is being used (too long).
- Clutch assembly contaminated with grease/oil.
- Clutch not fully/properly seated in.
- Flywheel not surfaced and disc has been glazed.
- Clutch assembly not designed for the application.
- Clutch assembly not designed for specific type of use (racing/competition, etc.).
- Clutch not adequate for horsepower/torque of application.
- Incorrect gear ratio to tire diameter.
- Clutch assembly has lost facing material from the disc.
- Clutch assembly has failed or is defective.
- Flywheel surfaced improperly (i.e. incorrect flywheel step).
- Damaged or worn throwout bearing collar.
- Damaged or bent pressure plate assembly and/or disc.
