Clutch Disc: Service and Repair

Removal

Caution: Do not allow oil or grease to contaminate the clutch disc facing. Even a trace of oil or grease may cause clutch grabbing or slipping. Handle the disc by its edges and do not touch the facing.

1. Remove the transaxle.
2. If the pressure plate will be reused, paint or scribe the alignment marks on the pressure plate and flywheel for assembly reference.

Caution: Loosen the pressure plate bolts one turn at a time to release the pressure plate spring tension evenly. A failure to release the tension evenly could cause distortion of the pressure plate





3. Remove the pressure plate bolts, the pressure plate, and the clutch disc. While loosening the bolts, use SST to prevent turning of the flywheel.

Inspection
Check the following parts, and repair or replace those if necessary.

Clutch cover





1. Check the contact surface of the clutch disc for scorings, cracks, or discoloration.

Notice: Minor scoring or discoloration should be removed with a sandpaper.

2. Inspect the diaphragm spring for damage, or damage to the cover.

Clutch Disc
1. Check the facing surface for hardening or oil contamination.

Notice: Use sandpaper if the contamination is minor.

2. Inspect for looseness of the facing rivets.





3. To inspect for a worn clutch disc, measure the depth to the rivet heads with a slide caliper.
Depth: 0.012 inch (0.3 mm) min.





4. Inspect the run-out of the clutch disc.
Lateral run-out: 0.027 inch (0.7 mm) max.
Vertical run-out: 0.039 inch (1.0 mm) max.
5. Inspect for wear or rust on the splines. Remove any minor rust.

Installation





1. Position the clutch disc on the flywheel and hold it in position with SST.

Notice: Use the marks which were made during removal for the alignment reference.

2. Position the pressure plate on the flywheel and install the pressure plate bolts.

Notice: Tighten the bolts evenly and alternately to prevent distortion of the pressure plate.





3. Tighten the pressure plate bolts.
Tightening torque: 13 - 20 ft. lbs. (18 - 26 Nm, 1.8 - 2.7 kg-m)
4. Remove the clutch alignment tool.

Notice: Before installing the transaxle, clean the clutch disc splines on the input shaft and coat them with a light film of a Clutch Grease, or equivalent

5. Install the transaxle.