| Problem | Cause | Remedy |
|---|---|---|
| Pressure plate uneven | Broken or bent tangential straps Distorted cover |
Replace clutch cover Install correctly |
| Facing contaminated with oil | Oil seals defective | Renew oil seals Replace driven plate |
| Facings contaminated with grease | Excessive grease on splines and release bearing |
Renew driven plate Renew release bearing |
| Incorrect facing material | Incorrect plate fitted | Check plate is suitable for application |
| Facing damp | Moisture penetrated facing | Operate clutch to remove moisture |
| Difficult or hard operation | Clutch cable Release lever bearings Gearbox snout Master or slave cylinder |
Fully inspect the release system Check bearing/snout combination Renew all suspect parts |
| Air in the hydraulic system | Leaking or damaged master/slave cylinders or pipes | Renew any suspect or damaged parts |
| Damaged gearbox snout | Incorrect lubricant used | Renew the snout and use correct grade of lubricant |
| Engine/gearbox mountings | Incorrect or damaged mountings | Replace mountings |
| Engine not tuned/misfiring | Carburettor, fuel injection ignition timing | Check engine for correct running |
1. Incorrect grease on splines
Cause
• Grease containing solids has been used
2. Tangential strap bent
Cause
• Play in the drive train
-> Worn drive line coupling (BMW)
• Incorrect driven practice
-> Tow starting in 1st or 2nd gear
• Incorrect storage
-> Dropping the clutch prior to fitting
• Clutch not bolted up evenly and sequentially
3. Diaphragm spring fingers bent
Cause
• Incorrect fitting
-> Diaphragm fingers bent during fitting
4. Facing contaminated with grease
Cause
• Surplus grease not removed
-> Grease has been thrown out on to the facing material
5. Wear marks on release bearing inner bore
Cause
• Incorrect grade of grease or no grease used
• Damaged or worn gearbox snout
6. Facing worn on flywheel side
Cause
• Flywheel not replaced
• Contact surface on the flywheel not re-machined
7. Damaged hub splines
Cause
• Incorrect fitting
-> Gearbox input shaft and hub splines not
correctly aligned prior to fitting
-> Driven plate not centered
• Incorrect driven plate
8. Release bearing worn
Cause
• Release fork worn
• Release system damaged
9. Release bearing incorrectly lubricated
Cause
• Use of a solids based lubricant
10. Worn gearbox snout
Cause
• Incorrect grade of grease or no grease used
• Release bearing worn
11. Push rod wear mark off centre
Cause
• Damaged release system
-> Bearing worn
-> Guide bush worn
12. Flywheel scored
Cause
• Flywheel not re-machined/renewed
13. Tangential strap damaged
Cause
• Excessive free play in the drive joints
14. Damaged bearing lugs
Cause
• Damaged release system
15. Facing contaminated on the inner portion
Cause
• Damaged oil seal
• Excessive grease used on the splines
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