There is a release fork in the clutch basket. It has a maintenance-free release bearing that, when the clutch is released, pushes the clutch disc out. With a hydraulic control system, the piston of the working cylinder of the hydraulic system is connected to the release fork. The working medium of the hydraulic clutch control system is brake fluid, which is poured into a separate compensation tank.
In the released state, the drive disc presses the driven disc through the membrane springs to the engine flywheel and thus ensures the transmission of torque from the engine to the gearbox.
When the clutch pedal is depressed by the piston rod, pressure is created in the primary clutch cylinder, which is transmitted through the hydraulic pipeline to the clutch slave cylinder mounted on the gearbox. The piston of the slave cylinder, overcoming the force of the spring of the drive disc, depresses the release bearing through the clutch fork, slightly shifting the drive disc. Due to this, the driven disk, located between the clutch drive disk and the engine flywheel, is released.
With a mechanical clutch, the clutch pedal is connected to the clutch release lever via a clutch cable.
1 - Clutch drive
2 - Driven clutch disc