Removal of press and conducted disks of coupling carry out in the following order:

– remove a transmission;

– check existence of the labels defining the provision of a leading part of coupling in relation to a flywheel. In the absence of labels put them;

– alternately cross-wise unscrew 6 bolts of fastening of a leading part of coupling to a flywheel, holding a screw-driver a gear wreath of a flywheel from a provorachivaniye;

– remove press a coupling disk from directing pins and with it conducted.

Check of a technical condition of details of coupling carry out in the following order:

PREVENTION When cleaning of pollution of a disk, a casing and a flywheel try not to breathe air from a working zone because the formed dust can contain asbestos particles.

Fig. 7.10. Places of check of a diafragmenny spring on wear

– check a condition of a press disk of coupling. Development traces on the ends of a diafragmenny spring should make no more than 0,3 mm (fig. 7.10) ;

– check reliability of spring connection between a leading disk and a cover. Existence of scratches and absence or damage of rivets is not allowed;

Fig. 7.11. Check of planeness of a working surface of a press disk

– check press a disk on lack of cracks, пригара and wear of a surface. Not planeness of a press disk should not exceed 0,2 mm (fig. 7.11) ;

– measure thickness of overlays of a disk of coupling. If thickness of less admissible or if heads of rivets are close to a working surface, replace them or a coupling disk;

Fig. 7.12. Check of face palpation of a disk of coupling (Max. 0,8 mm)

– check face palpation of a disk of coupling which at distance of 2,5 mm from external diameter should make no more than 0,8 mm (fig. 7.12) ;

– check a condition of a surface of a friction of a flywheel on lack of cracks, пригара and wear of a surface. If necessary, перешлифуйте a working surface of a flywheel or replace it.

Carefully clear a shlitsevy part of primary shaft of a transmission and internal shlitsa of a conducted disk, and also directing plug of the vyzhimny bearing.

Installation of conducted and press disks of coupling carry out in the following order:

– put a conducted disk of coupling to a flywheel, thus acting part of a nave of a disk should be directed outside, that is to a transmission;

– establish press a coupling disk on a flywheel, having at the same time established it on directing pins. At repeated installation of earlier removed conducted disk of coupling, check that the labels put before removal are combined;

Fig. 7.13. The sizes of a special opravka for a centering of a conducted disk of coupling

Fig. 7.14. A centering of a conducted disk of coupling with the help of an opravka

– using a special opravka (fig. 7.13) or an old primary shaft of a transmission, center a coupling disk concerning a flywheel (fig. 7.14) ;

– step by step on a diagonal tighten bolts of fastening of a press disk of coupling the demanded moment. Take an opravka from a coupling disk;

– be convinced that shlitsa of primary shaft of a transmission and the directing plug of the bearing are cleared of dirt. Grease a shlitsevy part of primary shaft of a transmission and directing plug of the vyzhimny bearing with a thin layer of special greasing;

– establish into place a transmission.

PREVENTION The layer of greasing should be thin and uniform, otherwise at coupling work surpluses of greasing can get on working surfaces of coupling that will lead to violation of its work.