Remove gearbox.
Gradually loosen each time by 1-1.5 turns the bolts securing the drive.fisk until it is unloaded.
Attention: If the bolts are loosened immediately, the diaphragm spring may be deformed.
To prevent the flywheel from turning when loosening the bolts, block the flywheel with a screwdriver or a rod.
Finally, completely unscrew the bolts.
Remove the drive and driven discs.
Attention: Do not drop the drive and driven discs when pulling out, as the result may be difficult disengagement of the clutch or jerking of the clutch after it is installed.
Wipe the flywheel with a cloth soaked in gasoline.
To check you need:
Check the drive disc for scratches and burnt spots.
Check the integrity of the diaphragm spring
Check the spring connections of the driving disk and the cover for cracks and the reliability of the fastening of the rivet connections.
Check the flywheel for scratches and burnt spots.
Treat the drive disc and flywheel with very fine sandpaper.
Oily and mechanically damaged drive discs must be replaced.
Measure the thickness of the drive disc linings with a caliper. The minimum allowable thickness is 7.5 mm. Otherwise, the disk must be replaced. The drive disk is also replaced in the presence of burnouts.
Check the edges of the diaphragm spring for wear. If worn up to 0.3 mm, replace the disc.
Check the edges of the diaphragm spring for bending. With uneven height, bend the edges with pliers.
Check spring windows, torsion springs and hub for signs of wear. With a compound flywheel, the driven disk has a rigid structure without dampers. Torsion dampers in this case are installed in the flywheel.
Remove the release bearing from the transmission front cover and check.
The workshop checks the runout of the driven disk. Lateral runout should not exceed 0.5 mm.
Attention: This check must be carried out when reinstalling the previous driven disk and if before that there were difficulties in releasing the clutch.
Check the ease of movement of the ball bearing in the groove of the crankshaft. If necessary, remove the bearing with a puller and replace.
Before installing a new clutch, remove the anti-corrosion protective coating from it.
Insert the drive and driven discs into the flywheel. Place the clutch drive plate on the appropriate dowel pins. Center the driven disc in the drive disc. For alignment, it is best to use a HAZET shaft or an input shaft from an old gearbox.
When installing the previous drive disk, install it according to the marking. The marking must face towards the gearbox. a Install the drive plate bolts.
Tighten the drive disc mounting bolts sequentially by 1-1.5 turns. Then remove the centering shaft.
Attention: When tightening the bolts, the drive plate must be evenly and freely inserted into the flywheel.
Install gearbox.