General description (Audi 100 C3)

All models with manual transmission are equipped with a single-plate dry clutch with a diaphragm spring. The unit consists of a steel cover that is bolted to the flywheel and contains a pressure plate and a diaphragm spring.

The clutch disc slides freely on the input shaft of the transmission, and is held in position between the flywheel and the pressure plate by the pressure of a diaphragm spring. Friction pads are riveted to the clutch disc, which has a spring-loaded hub to absorb transmission shock and ensure smooth transmission of engine rotation when the clutch is engaged.

Depending on the vehicle specification, the clutch may be mechanically operated by a cable or hydraulically by a master and slave cylinder. The clutch release mechanism consists of a rod shaft on a cable-operated clutch or a release lever on a hydraulically operated clutch, and a release bearing mounted in the clutch housing at the end of the gearbox.