Removal
1. Remove the gearbox.
2. Remove the clutch housing assembly and clutch disc.
a) Apply timing marks to the clutch housing and flywheel.
b) Loosen the mounting bolts one turn at a time.
3. Remove the clamp and take out the clutch release bearing.
4. Remove the clutch release fork and boot.
Examination
1. Check the clutch disc for wear and damage.
2. Checking the wear of the clutch disc friction linings.
a) Using a caliper, measure the distance from the surface of the linings to the heads of the rivets.
Minimum value - 0.3 mm
b) If the measured value is close to the minimum, replace the clutch disc.
3. Checking the axial runout of the clutch disc.
a) Using a dial indicator, check the axial runout.
Maximum runout - 0.8 mm
b) If the runout is higher than normal, replace the clutch disc.
4. Checking the flywheel runout.
a) Using a dial indicator, check the flywheel runout.
Maximum runout - 0.1 mm
b) If the runout exceeds the norm, replace the flywheel.
4. Checking the support bearing.
a) Turn the support bearing by hand while simultaneously pressing it in the axial direction.
b) If the bearing is seized or has too much resistance to rotation, replace the bearing.
Note: The bearing is lubricated for life and does not require maintenance.
5. Replacing the support bearing (if necessary).
a) Remove the bearing from the seat using a puller.
b) Using a mandrel, press the new support bearing into place.
Clutch. 1 - flywheel, 2 - primary shaft support bearing, 3 - clutch disc, 4 - clutch housing, 5 - clutch release bearing, 6 - clutch release fork, 7 - clamp, 8 - boot.
6. Checking the diaphragm spring.
a) Using a caliper, measure the depth and width of the diaphragm spring wear groove.
Maximum depth - 0.6 mm
Maximum width - 5.0 mm
b) If necessary, replace the clutch housing assembly.
7. Checking the clutch release bearing.
a) Turn the bearing by hand while simultaneously pressing it in the axial direction.
Note: The bearing is lubricated for life and does not require maintenance.
b) If damage is found, replace the bearing.
Installation
1. Using a drift, install the clutch disc.
2. Installing the clutch housing.
a) Align the marks on the clutch housing and flywheel.
b) Tighten the mounting bolts crosswise.
Tightening torques:
- for gearbox H151F — 39 Nm
- for other gearboxes - 19 Nm
Note: Temporarily tighten bolts #1 and #2.
3. Checking the deformation of the diaphragm spring peaks.
a) Using a special tool, measure the deviation of the diaphragm spring peaks.
Maximum deviation from plane - 0.5 mm
b) If the deviation exceeds the limit, make adjustments using a special tool.
4. Apply lithium molybdenum disulfide grease (NLGI No.2) to the parts shown in the figure.
