Clutch Assembly: Inspection

Check disc for loose rivets, worn springs and oil contamination. Minimum lining height above rivet heads is .012" (.30 mm). Inspect flywheel and pressure plate for burns, scoring and grooves.
Check flywheel and pressure plate runout. Resurface or replace flywheel and pressure plate if beyond specification. See CLUTCH RUNOUT (MAXIMUM) . If flywheel ring gear is replaced, ensure chamfer on flywheel teeth faces engine.
Check clutch disc runout using dial indicator. Replace disc if it is not to specification. See CLUTCH RUNOUT (MAXIMUM) . Check disc hub and input shaft splines for excessive wear. Hub must slide smoothly on input shaft splines.
Check pilot bearing/bushing for wear. Apply inward pressure and turn pilot bearing/bushing from side to side. If bearing/bushing sticks or has excessive resistance, replace bearing/bushing. Check release bearing for smooth operation, and inspect it for wear, damage and looseness. Replace bearing as necessary.
On Navajo, use Impact Slide Hammer Puller (T58L-101-B ) to remove pilot bearing. Install pilot bearing with seal toward transmission using Bearing Driver (T71P-7137-H ) and Adapter (T74P-7137-A ).

CLUTCH RUNOUT (MAXIMUM)