Drivetrain – Clutch Slips

Problem: Diaphragm fingers worn

Causes:

• Excessive release bearing pre-load
• No free play

Help:

• Adjust pre-load
• Renew clutch assembly
• Adjust free play

Problem: Clutch facing worn out

Causes:

• Normal wear and tear
• Allowing the clutch to slip for too long
• Incorrect pressure plate

Help:

• Renew clutch assembly

Problem: Clutch facing contaminated

Causes:

• Oil seals leaking
• Gearbox splines overgreased
• Release bearing overlubricated

Help:

• Renew oil seals
• Renew clutch assembly

Problem: Uneven wear pattern on flywheel side of facing material

Causes:

• Badly worn flywheel

Help:

• Re-machine flywheel

Problem: Gearbox snout damaged

Causes:

• No / incorrect lubricant
• Damaged release bearing
• Incorrect combination of bearing and snout

Help:

• Renew gearbox snout
• Use correct lubricant
• Check parts for suitability

Problem: Clutch housing, levers or diaphragm spring broken

Causes:

• Incorrect installation

Help:

• Follow correct installation procedures

Problem: Overheating of pressure plate

Causes:

• Oil on the facings (reduced coefficient of friction) – Faulty oil seals
• Insufficient release bearing clearance
• Damaged release system (cable or hydraulic)
• Incorrect driving – Allowing the clutch to slip for too long
• Incorrect parts

Help:

• Oil contamination: Renew oil seal
• Renew clutch assembly