General information

The clutch is designed for short-term separation of the engine and transmission when shifting gears or braking and their smooth connection when starting the car, as well as to protect transmission parts from dynamic loads. The clutch is single-disk, dry, permanently closed type, with a central pressure spring and a torsional vibration damper on the driven disk. In the gearbox housing, the input shaft of the gearbox protrudes, on which the release bearing is located, which does not require maintenance, and outside the housing there is a clutch release lever to which the clutch cable is attached.



The principle of operation of the clutch is based on the transmission of torque from the flywheel and the leading part of the clutch to the driven disk, and hence to the input shaft of the gearbox, due to friction forces. that occur between the discs when the clutch is engaged. In this position, due to the elasticity of the pressure spring, the pressure plate clamps the driven disc between itself and the flywheel with a force that prevents it from slipping. In this case, the release bearing and the pressure spring do not touch.


When you press the clutch pedal, through the clutch cable and the fork, the release bearing presses the pressure spring of the clutch drive disc and presses the drive disc away from the flywheel, as a result of which the driven disc is released and the transmission of torque between the engine and gearbox stops.

On cars up to 1996, the freewheel adjustment is automatic and occurs using a ratchet mechanism located near the clutch pedal.

Because. that each time the clutch is engaged and disengaged, there is a slight wear on the lining of the clutch disc, in order to maintain normal operation, it is necessary to adjust the free play, which is performed by the automatic free play selection mechanism installed at the top of the pedal. This mechanism ensures that the free play of the pedal is constant even with maximum wear on the linings on the clutch disc.

The free play is adjusted automatically by pressing and releasing the clutch pedal. The adjustment is carried out by the gear sector, turning on the axis of the clutch pedal. The clutch cable is fixed on the gear sector, bending around it, and when the pedal is released, the cable is tensioned only by a spring. When the clutch pedal is pressed, the ratchet blocks the toothed sector, providing a rigid connection between the pedal and the sector, and the clutch cable is tensioned.

When the clutch pedal is released to its original position, the clutch cable is tensioned only by a spring. In the event of wear of the lining of the driven disk, the spring turns the toothed segment to a further position in relation to the position occupied before disengaging the clutch. When you press the clutch pedal again, the ratchet locks the toothed segment with a shift one tooth further, which provides compensation for lining wear.

The ratchet of the freewheel adjustment mechanism ensures that the gear sector can only be rotated in the direction of the clutch cable tension, and ensures a constant travel of the clutch pedal.