Clutch Assembly: Inspection

Check clutch disc for loose rivets or springs. Discard disc if burned, worn or damaged. Ensure clutch disc hub slides smoothly on input shaft splines. Check clutch lining thickness. Original lining depth is .063" (1.6 mm). Minimum lining depth is .008" (.20 mm) above rivet heads.
Measure clutch disc runout at outer edge with dial indicator. Maximum runout is .039" (1.0 mm). Check friction surfaces of flywheel and pressure plate for scoring, roughness, heat cracks or distortion. Replace flywheel and pressure plate if surface is deeply scored.
Measure pressure plate thickness. Standard thickness is .39" (1.0 mm). Using straightedge and feeler gauge, check pressure plate friction surface flatness in at least 4 directions. Maximum limit is .012" (.3 mm). On models with clutch release fork, inspect release lever ball socket, release bearing contact face and ball retaining spring for damage. Spring must hold release lever tightly to ball stud.
Check contact areas of release bearing and release fork for excessive wear. Rotate release bearing and shift collar to check for noise or roughness. Inspect return spring and release bearing spring for wear.