6
-
Slave cylinder with choke assembly
The hydraulic clutch is supplied from a separate chamber in the brake fluid reservoir.
Because of this separate chamber, the braking system remains operational if a leak occurs in the hydraulic clutch system.
Function
Pressure is created in the master cylinder when the clutch pedal is operated.
The hydraulic fluid in the master cylinder is put under pressure and fed through the pressure pipe to the slave cylinder.
The displaced hydraulic fluid moves the piston in the slave cylinder and this in turn slides the release bearing axially.
The release bearing pushes the bearing inner ring against the tongues of the diaphragm spring.
The spring induced grip between the clutch disc and the flywheel is broken.
When the clutch pedal is released the diaphragm spring presses the piston in the slave cylinder back to its starting position. The spring induced grip between the clutch disc and the flywheel is created again.
A spring in the slave cylinder ensures preload on the release bearing.
The release bearing is always touching the pressure plate because of this preload. The extra travel caused by clutch lining wear is compensated for by the preload.
There is a choke assembly in the slave cylinder which helps to increase smoothness when pulling away.
Because of the choke assembly, the pressure drop of the fluid leaving the slave cylinder and returning to the reservoir is delayed.
Because of this, the clutch closing time is delayed when the clutch pedal is released suddenly, and a soft and comfortable clutch engagement is achieved.
Choking does not occur during clutch disengagement.
CAUTION:Vehicles with an automated shift manual (ASM) transmission have a slave cylinder without a choke assembly. The slave cylinders must not be exchanged for one another.
NOTE:The clutch pedal travel cannot be adjusted.
The release bearing is an interference fit in the slave cylinder and cannot be renewed separately.
