Opel Astra, Zafira

Since 1998 of release

Repair and car operation

Coupling

Coupling - the general information and check of a condition of components

Design of coupling and components of its drive

On all models equipped manual transmission, one-disk coupling of dry type with диафрагменной a spring is used. The nave of a frictional (conducted) disk is equipped longitudinal шлицами, entering into gearing with шлицами pins of a primary shaft of transmission. Frictional and press coupling disks are kept in contact with each other at the expense of the effort developed диафрагменной by a spring of a press disk. The design of coupling and its drive — see an illustration the Design of coupling and components of its drive.

Coupling deenergizing is made in the hydraulic way. The deenergizing drive consists of a pedal of coupling, the main hydraulic cylinder with the tank, connecting lines and united with выжимным the bearing, planted directly on an entrance shaft of a transmission, the executive cylinder (the Design of coupling and components of its drive see an illustration).

At pedal squeezing in a system path hydraulic pressure which is as a result put to built in in the executive cylinder выжимному to the bearing rises. The bearing under the influence of hydraulic effort nestles on petals диафрагменной springs of a press disk in a coupling basket. Being curved, the spring interrupts contact of press and conducted disks, releasing last.

At coupling service, besides replacement of the components having obvious damages, it is necessary to make some primary checks (it is supposed that the transmission is in good repair):

1. First of all it is necessary to check up liquid level in the main hydraulic cylinder of coupling (Routine maintenance see the Head). In case of need make updating, having added demanded quantity of a hydraulic liquid, and attentively examine system on presence of signs of leaks. At a devastation of the tank of the main cylinder it is necessary to remove air stoppers (Removal of air from a hydraulic path of a drive of deenergizing of coupling see) from a hydraulic path, then to check up serviceability of functioning of coupling.
2. For an estimation of time of switching of coupling start the engine on normal turns of idling. Make sure that neutral transfer is included and release a coupling pedal. Now squeeze out a pedal of coupling and, having waited for some seconds, include a reverse gear. Switching should not lead to occurrence of a gnash and other extraneous noise, with high degree of probability specifying in malfunction of a conducted disk or assemblage of a basket of coupling.
3. For check of completeness of deenergizing of coupling cock a lay brake and start the engine. Keeping a coupling pedal at height about 13 mm over a floor, попереключайте a transmission between the first and back transfers. Presence of hindrances at lever switching speaks about malfunction of components of the mechanism of deenergizing. Estimate a course of a pusher of the executive cylinder of coupling. At completely squeezed out pedal the pusher should be put forward on appreciable size, otherwise it is necessary to check up level of a hydraulic liquid in the main cylinder.
4. Make visual check of a condition of axial plugs in the top part of a pedal of coupling. Make sure of absence of signs of jamming and excessive люфта axes.