5C
Clutch Cover, Clutch Disc, Flywheel and Release bearing Inspection
Clutch Disc Facing Surface Condition
A burnt or glazed facing can be reconditioned by grinding it with No. 120 – 200 sandpaper. If surface is in bad condition beyond repair, replace whole clutch disc assembly.
1. Sandpaper
Clutch Facing Wear
Check wear of facing by measuring depth of each rivet head depression, i.e. distance between rivet head and facing surface. If depressing is found to have reached service limit at any of the holes, replace clutch disc assembly.
Rivet head depth of clutch disc
Standard: 1.2 mm (0.05 in.)
Service limit: 0.5 mm (0.02 in.)
Backlash in Disc Serration Fit
Check backlash by turning disc back and forth as mounted on transmission input shaft. Replace disc assembly if backlash is noted to exceed service limit. Backlash here is a circular displacement as measured with a dial indicator.
Backlash limit in serration fit of clutch disc
0.8 mm (0.03 in.)
Clutch Cover
Inspect clutch cover for evidence of diaphragm spring rivets getting loose. If rivets are loose or are getting loose, replace cover assembly as such cover makes rattling noise when clutch pedal is depressed.
Inspect tips of tapering fingers for wear. If tips are worn excessively, replace cover assembly.
1. Spring wear
2. Rivet
Release Bearing
Replace release bearing if it sticks, rattles or makes abnormal noise when spun and turned by hand.
Input Shaft Bearing
Replace input shaft bearing if it sticks, rattles or makes abnormal noise when spun and turned by hand.
Flywheel
Check surface contacting clutch disc for any wear or damage.