(b) Using SST, install the pilot bearing. SST 09304-30012 6. INSPECT DIAPHRAGM SPRING FOR WEAR Using calipers, measure the diaphragm spring for depth and width of wear. Limit: Depth 0.6 mm (0.024 in.) Width 5.0 mm (0.197 in.) 7. IF NECESSARY, REPLACE PRESSURE PLATE (a) Drill out the rivet heads. (b) Using a punch, drive out the rivets. (c) Install a new pressure plate with special pressure plate bolts and nuts. Torque the nuts. Torque: 250 kg·cm (18 ft·lb, 25 N·m) (d) Stake the nuts. 8. INSPECT RELEASE BEARING Turn the bearing by hand while applying force in the axial direction. NOTE: The bearing is permanently lubricated and requires no cleaning or lubrication.