Servicing; Travelling Clutch - Kubota MX5100 Workshop Manual

MX5100, WSM

[3] SERVICING

(1) Travelling Clutch

Backlash between Clutch Disc Boss and Gear Shaft
1. Mount the clutch disc to the gear shaft.
2. Hold the gear shaft so that it may not turn.
3. Rotate disc lightly and measure the displacement around the disc
edge.
4. If the measurement exceeds the allowable limit, replace the disc.
Displacement around
Allowable limit
disc edge
(1) Paint Marking
Thrust Ball Bearing
1. Remove the thrust ball bearing from release hub with a puller.
2. Check for abnormal wear on contact surface.
3. Hold bearing inner race and rotate outer race, while applying
pressure to it.
4. If the bearing rotation is rough or noisy, replace the bearing.
NOTE
• Do not depress outer race, while installing thrust ball
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 disc.
In this case, inspect transmission gear shaft oil seal, engine rear
oil seal and other points for oil leakage.
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. 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
2-S25
CLUTCH
2.0 mm
0.079 in.
W10299170
W10303060
0.3 mm
0.012 in.
W10309250
0.5 mm
0.020 in.
W10312830