Description

DESCRIPTION

The clutch adopted is a dry single-plate type with diaphragm pressure plate springs.

The clutch is released through a hydraulic device formed of a reservoir (1) shared with the braking system, a pump (2) fastened to the pedal unit, a control cylinder (3) fastened to the rear engine cover and a thrust bearing (4).

The pedal-operated pump transmits the fluid pressure increase through a hose to the control cylinder.

A prod on the control cylinder acts on the clutch release control fork which moves the self-centering thrust bearing overcoming the action of the diaphragm pressure plate springs.

In addition to reducing the effort exerted on the pedal, the adoption of the hydraulic clutch release device makes it possible to:

• increase reliability of the control compared with the conventional mechanical system.
• improve progression, due to the damping of the hydraulic system during disengagement which prevents jerking, particularly when the torque transmitted is high.
• achieve greater operating precision, as this device enables constant height adjustment of the clutch pedal.
• increase driving comfort because of the reduction of the level of vibrations transmitted from the engine, due to the damping effect of the oil.

In order to comply with current regulations on the subject of environmental pollution, ecological (asbestos-free) clutch plate friction gaskets have been adopted.

1. Brake-clutch system reservoir
2. Clutch pump
3. Clutch control cylinder
4. Thrust bearing
5. Clutch plate
6. Pressure plate
7. Clutch control pedal
8. Fork