1975 Datsun 280z FSM - Spooled up Racing

Clutch
Condition
Probable cause and testing
Corrective action
Clutch chatters
Clutch chattering is usually noticeable when car is just rolled off with clutch partially engaged.
Noisy clutch
• Weak or broken clutch disc torsion
spring.
• Oil or grease on clutch facing.
• Clutch facing out of proper contact or
clutch disc runout.
• Loose rivets.
• Warped pressure plate or clutch cover
surface.
• Unevenness of diaphragm spring toe
height.
• Loose engine mounting or deteriorated
rubber.
A noise is heard after clutch is disengaged.
• Damaged release bearing.
Replace.
Replace.
Replace.
Replace.
Repair or replace.
Adjust or replace.
Retighten or replace.
Replace.
A noise is heard when clutch is disengaged.
• Insufficient grease on the sliding surface
of bearing sleeve.
• Clutch cover and bearing are not installed
correctly.
Apply grease.
Adjust.
A noise is heard when car is suddenly started off with clutch partially engaged.
• Damaged pilot bushing.
Replace.
Clutch grabs
When grabbing of clutch occurs, car will not start off smoothly from a standing start or clutch
is engaged before clutch pedal is fully depressed.
• Oil or grease on clutch facing.
• Clutch facing worn or loose rivets.
• Wear or rust on splines in drive shaft and
clutch disc.
• Warped flywheel or pressure plate.
• Loose mountings for engine or power
train units.
Replace.
Replace.
Clean or replace.
Repair or replace.
Retighten.
CL-11