Description

DESCRIPTION

The clutch adopted for the entire range of Alfa Romeo 167 vehicles is of the dry monodisc type with a diaphragm pressure plate with springs.

This traditional solution is integrated with a series of devices aimed at:

1. respecting the current laws regarding the problem of environmental pollution;
2. reducing the pressure necessary to depress the clutch pedal;
3. containing the size of the assembly within acceptable values.

• The problem of pollution has been faced with the addition of friction gaskets and clutch plate employing ecological material (without asbestos) in the same way as for the brake pads.
• To reduce the effort required to depress the clutch pedal and to facilitate disengagement, a hydraulic disengagement device has been adopted on all the models in the "167" range.

This device is composed of a tank (1) shared with the braking system, a pump (2) secured to the pedal and a cylinder (3) fitted to the gear lever bell by way of a bracket (4) and thrust bearing (5).

The use of a hydraulic device makes it possible to:

• increase reliability in relation to the traditional, mechanical type solution;
• improve progression due to the damping of the hydraulic system during disengagement which avoids jerking particularly when the transmitted torque is high;
• greater operating precision as this device permits a constant adjustment to be made in the height of the clutch pedal;
• increase driving comfort, a result of the reduction in the level of vibrations transmitted to the engine due to the the damping effect of the oil.