- check the clutch surface for wear or oily contamination;
- check the damper springs for damage or weakening;
- check the clutch disc for warping or bending. After checking, replace the clutch disc if necessary.
2. Checking the clutch disc:
- measure the depth of the rivet head from the surface of the clutch disc;
- replace the clutch disc if the measured value is below the limits.
Rivet head depth (limit value: 1.2 mm).

3. Checking the runout of the clutch disc in the direction of rotation:
- measure the runout with a dial indicator;
- if the runout exceeds the maximum permissible value, replace the clutch disc.

[The article was reprinted from the website CHEVYMAN]
