Clutch Cover and Disc Runout

Check the clutch disc before installation, even if it is a new disc. Face run out of the disc should not exceed 0.5 mm (0.020 inch). Run out should be checked 1/4 inch from the outer edge of the disc. If run out is excessive obtain another disc.

Check the condition of the clutch cover (pressure plate) before installation. A warped cover or diaphragm spring will cause incomplete release or engagement of the clutch. Use care when handling the clutch cover (pressure plate) or disc. An impact can distort the clutch cover (pressure plate), release fingers, diaphragm spring, or the clutch disc.

Use an alignment tool when positioning the disc on the flywheel. The tool prevents accidental misalignment which could cause cover distortion or disc damage.

A common cause of clutch cover distortion is improper bolt tightening. To avoid warping the clutch cover (pressure plate), tighten bolts in a crisscross pattern one or two turns at a time until the specified torque is reached.