Hydraulic Clutch Linkage Frequently, the clutch assembly is controlled by a hydraulic system (Figure 35-13). In the hydraulic clutch linkage system, hydraulic (liquid) pressure transmits motion from one sealed cylinder to another through a hydraulic line. Like the cable linkage assembly, the hydraulic linkage is compact and flexible. Cable linkage also allow engineers to place the release fork anywhere that gives them more flexibility in body design.
In addition, the hydraulic pressure developed by the master cylinder decreases required pedal effort and provides a precise method of controlling clutch operation.Brake fluid is commonly used as the hydraulic fluid in hydraulic clutch system.