Component Description: Function
WARNING: This page is about a different car, the 2013 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The master cylinder is responsible for generating the fluid pressure for the hydraulic system.
When the piston is in the rest position, the volume in the pressure chamber and the reservoir is equalized via the compensating bore. When the piston moves over the compensating bore, fluid pressure builds up in the pressure chamber.
The task of the clutch slave cylinder is to transmit the fluid pressure generated in the clutch master cylinder as a force for actuating the clutch release bearing.