wsm Kubota L4100 Workshop Manual page 157

L4100, WSM
Release Bearing
1. Check for abnormal wear on contact surface.
2. Rotate the release bearing outer race, while applying pressure
to it.
3. If the bearing rotation is rough or noisy, replace the release
bearing.
NOTE
• Do not depress the release bearing outer race, when
replacing the release bearing.
• Do not wash the release bearing with a cleaning solvent.
(1) Release Bearing
Clutch Disc Wear
1. Measure the depth from clutch disc surface to the top of rivet at
least 10 points with a depth gauge.
2. If the depth is less than the allowable limit, replace the disc.
3. If oil is sticking to clutch disc, or disc surface is carbonized,
replace the clutch disc.
Disc surface to rivet top
Allowable limit
(Depth)
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. Inspect the 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 diaphragm spring for wear.
If excessive wear is found, replace the 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 mutual
Allowable limit
difference
2-S22
CLUTCH
9Y1210278CLS0028US0
0.3 mm
0.01 in.
9Y1210272CLS0008US0
0.5 mm
0.02 in.
9Y1210278CLS0029US0
(EU)
KiSC issued 08, 2012 A