Repair and Diagnosis: Transmission: Clutches: Description
Chevrolet and GMC vehicles incorporate two types of clutches. Borg & Beck type clutches can be identified by the use of three release levers to provide pressure plate actuation, and by coil springs which provide pressure plate tension. Diaphragm Spring type clutches utilize a single, slotted diaphragm type spring to provide both pressure plate actuation and tension. Both hydraulic and mechanical linkage are used for clutch control from 1965-70. Only mechanical linkage is used after 1970. Removal and installation procedures, overhaul procedures, and adjustments are the same for both Chevrolet and GMC during a given year, and are similar for both types of clutches used.