On vehicles fitted with a Selespeed gearbox
the clutch pedal no longer exists and the clutch is operated automatically
by the electro-hydraulic actuator which also controls the selection
and engagement of the gears [ Characteristic of working principle 2127A hydraulic transmission
external linkage].
CONSTRUCTION FEATURES
The clutch engagement and release device
consists of linkage which implements the movement of the thrust
bearing sleeve.
OPERATION
The engagement/release of the dry, single
plate type clutch takes place through the action of the thrust bearing
sleeve which, pressed against the pressure plate spring, discharges
the pressure and allows the detachment of the clutch plate from
the flywheel. When the linkage is released, the action of the pressure
plate spring returns the clutch plate in contact with the flywheel.The movement of the linkage is controlled,
via a cylinder, by the hydraulic actuator fitted on the gearbox
casing. The operation of the actuator is managed by the Selespeed
control unit [ Characteristic of working principle 2127A hydraulic transmission
external linkage].