wsm L503 Workshop Manual page 172

L3130 · L3430 · L3830 · L4630 · L5030, WSM
Checking Pressure Plate Assembly and Flywheel
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. Check 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.
Diaphragm spring
Allowable limit
mutual difference
Pressure Plate Flatness
1. Place a straight edge on the pressure plate and measure
clearance with a feeler gauge at several points.
2. If the clearance exceeds the allowable limit, replace it.
3. When the pressure plate is worn around its outside and its inside
surface only is in contact with the straight edge, replace even if
the clearance is within the allowable limit.
Clearance between
pressure plate and Allowable limit
straight edge
A : inside
2-S16
CLUTCH
0.5 mm
0.020 in.
W1017284
0.2 mm
0.008 in.
B : Outside
W1017439
KiSC issued 02, 2007 A