Function of a hydraulic release system with CSC
The concentric slave cylinder (CSC) (1) is assembled directly on the transmission.
The diaphragm-spring clutch can be set free of clearance, i.e., the release bearing is constantly running whilst the clutch is turning. A preload generated by the actuation system ensures that the clutch and the release bearing thrust ring are running at the same speed. Speed differences would lead to the generation of noises and increased wear.
The release bearings are self-centering (can be radially adjusted by approx. 1.5 mm) in order to compensate for alignment tolerances between the diaphragm spring and the clutch release bearing thrust face. They centrically adjust to the diaphragm spring tongues automatically during the first clutch actuations.
CSC clutch release bearings are used when the installation space is not large enough for a conventional clutch actuation system.