Clutch Assembly: Inspection

Check for cracks and wear on disc's facing. Measure depth of each rivet head. Minimum depth at any rivet is .008" (.20 mm). Maximum runout of clutch disc facing is .031" (.80 mm). Replace clutch disc if runout is not within specification.
Check pressure plate for warpage, heat marks (blue coloration) and cracks. Check diaphragm spring fingers for uneven height and wear at throw out bearing contact area. See Figure . Replace pressure plate if worn. Check release bearing rotation. If roughness is felt, replace bearing.
Inspect flywheel runout. Maximum flywheel runout is .004" (.10 mm). If runout is excessive, replace flywheel. Clean oil, grease and metal deposits from flywheel and pressure plate. Inspect for damage, cracks or warpage. Slight surface scoring can be removed with sandpaper. Replace or repair as necessary.