Master Cylinder: Operation

The clutch master cylinder produces the hydraulic pressure necessary to disengage the clutch. (Figure and Figure ). When the clutch pedal is depressed, the push rod moves the piston to produce pressure in the cylinder. This pressure moves fluid through the system to the slave cylinder, which in turn operates the clutch release lever and bearing, disengaging the clutch. When the clutch pedal is released, pressure is relieved and the return spring returns the piston to its original position until the next pedal actuation.