2. Mark position of a casing of coupling and a flywheel concerning each other.
3. Block the flywheel, then unscrew the bolts of the clutch cover in a diagonal sequence (photo). After loosening the bolts two or three turns, check that the coating is not stuck on the dowel pins. If necessary, loosen the cover with a screwdriver.
4. Remove all bolts, then lift clutch cover and friction disc off flywheel.
5. Clean cover, disc and flywheel. Do not inhale the dust, as it contains asbestos, which is harmful to health.
6. Check up a condition of fingers of a diaphragm spring. If the wear depth exceeds 0.3 mm, the cover assembly must be replaced.
7. Check the condition of the pressure plate. Light wear is acceptable, but if excessive, the cover assembly must be replaced.
8. Check the condition of the friction disc linings so that there are no splits, grease contamination. Linings are considered excessively worn if they are worn down to the rivets. Check the condition of the disc hub and slots by temporarily installing it on the transmission input shaft. Replace friction disc as needed.
9. Check the condition of the friction surface of the flywheel. If there is excessive wear, the flywheel can be reground, otherwise replace it.
10. Before assembly, check that all parts are clean. Apply high temperature grease to the friction disc hub grooves. Note that the new pressure plate and clutch cover are coated with a protective lubricant. It is allowed to clean the lubricant only from the contact surface of the friction disc lining. Removing lubricant from other areas will reduce clutch life.
11. Start assembly by placing the friction disk on the flywheel, the hub side with the torsion springs out (photo).
12. Place the clutch cover on the disc, install it on the pins. If an old coating is being installed, align the previously made marks.
13. Insert and hand-tighten the bolts to secure the cover in position.
14. The friction disc must now be centered to ensure proper alignment of the transmission input shaft with the bushing bearing in the crankshaft. To do this, you can use a tool, or a wooden beard made according to the dimensions given in fig. 5.4. Insert the tool through the friction disk into the hub bearing and make sure it is centered (photo).
15. Tighten the clutch cover bolts evenly in a diagonal sequence until you reach the tightening torque specified specification, then remove the alignment tool (photo).
16. Before installing the gearbox, check the smoothness and softness of the release bearing, if necessary, replace it as described in Chapter 8.
17. Install the engine or gearbox as described in Sections 1 or 6.
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