1. Wash the disassembling parts except clutch disc with a suitable cleaning solvent to remove dirt and grease before making inspection and adjustment.
2. Check friction surface of pressure plate and flywheel for scoring or roughness.
– Slight roughness may be smoothed by using fine emery cloth.
– If these parts have deep scores or grooves on their surface, they should be replaced.
3. Inspect the surface of the diaphragm spring for wear.
If excessive wear is found, replace clutch cover assembly.
4. Inspect thrust rings (wire ring) for wear or damage.
As these parts are invisible from outside, shake pressure plate assembly up and down to listen for chattering noise, or lightly hammer on rivets for a slightly cracked noise. Any of these noises indicates need of replace as a complete assembly.
