Check the diaphragm spring end for wear and uneven height.
Check the pressure plate surface for wear, cracks and color change.
Check the rivets for looseness and replace the clutch cover assembly if necessary.
Check the clutch facing for loose rivets, uneven contact, deterioration due to seizure, adhesion of oil, or grease, and replace the clutch disc if defective.
Check for the torsion spring play and damage and if defective, replace the clutch disc.
Measure the depth from a clutch lining surface to a rivet. If the measured value is less than the specification below, replace it.
Standard value
Clutch disc rivet depth (A): 0.3 mm (0.0118 in.)