CLUTCH 5 A. CLUCTH MASTER CYLINDER The clutch master cylinder is mounted on the firewall with its fork connected the Clutch pedal. The master cylinder is a control device that converts mechanical energy which comes by pressing the clutch pedal into hydraulic pressure, in order to actuate the clutch slave cylinder which is located at the other end of the hydraulic system. As the piston moves along the bore the mechanical effort is converted into hydraulic pressure. The pressure remains same in the hydraulic line while force is magnified at slave cylinder end because of increased piston area of slave cylinder. NOTE The clutch master cylinder parts are not serviceable and needs to be replaced completely if found defective. B. CONCENTRIC SLAVE CYLINDER (CSC) The clutch control mechanism is fully hydraulic. There is no mechanical transfer (fork) inside the clutch cover from an external slave cylinder. The concentric slave cylinder (CSC) means that the slave cylinder is integrated with the throwout bearing. The concentric slave cylinder (CSC) is extremely efficient and reliable and the throwout bearing is accurately centered and secured to the transmission cover using two screws. The bearings and friction surfaces do not need to be lubricated. The bearing on the concentric slave cylinder (CSC) is self-centering against the clutch diaphragm spring. The hydraulic line from the master cylinder is connected to the concentric slave cylinder (CSC) via an adapter and peak torque limiter. Advantages of CSC: • Lighter pedal effort resulting in comfortable drive. NOTE • When a self adjusting clutch assembly is replaced, the concentric slave cylinder (CSC) also requires replacement. • Remove the protective cap just before installation. • The concentric slave cylinder parts are not serviceable and needs to be replaced completely if found defective. C. PEAK TORQUE LIMITER The peak torque limiter is the flow reducer located between the clutch master cylinder and slave cylinder in the hydraulic line. The main function of the peak torque limiter is to restrict flow of fluid below certain limit to avoid sudden engagement of clutch. The peak torque limiter does not come into picture during normal driving.
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