Clutch Disc Inspection

Check the clutch disc lining surface for hardening or the presence of oil.
Check for a worn clutch disc lining. Measure the minimum allowable depth to the rivet heads with a slide caliper.

Fig 1: Measuring Depth To Rivet Heads With Slide Caliper
Courtesy of MAZDA MOTORS CORP.
Check for loose clutch disc lining rivets.
Use a dial indicator to check the maximum allowable runout of the clutch disc.

Fig 2: Checking Clutch Disc Runout
Courtesy of MAZDA MOTORS CORP.
Use an emery cloth to remove minor imperfections in the clutch disc lining surface.

Fig 3: Removing Minor Imperfections In Clutch Disc Lining Surface
Courtesy of MAZDA MOTORS CORP.
Check for wear or rust on the splines. If necessary, clean them with an emery cloth.
Check the clutch disc for cracking, scoring, discoloration or other surface marks. Replace as necessary.