Clutch. General information (Audi 100 C4)

The clutch is a single-plate dry clutch with a pressure plate and a diaphragm spring. The clutch is driven by a hydraulic system similar to that used in the brake system, using the master and slave cylinders. When the clutch pedal is pressed, the pressure generated in the master cylinder is supplied through a pipeline to the slave cylinder, the piston of which acts on the clutch release fork and then on the release bearing (clutch release bearing).

When a dual mass flywheel is installed, the driven disc should be installed on the flywheel with the longer side of the disc hub pointing toward the clutch pressure plate.

If a conventional flywheel is installed, the driven disk must be inserted into the flywheel so that the spring seat is directed towards the clutch pressure plate.

Caution: Pressure plate and diaphragm (plate-shaped) the spring cannot be disassembled and if damaged, they are replaced together. New pressure plates should be specially protected from corrosion and lubricated. In a new clutch, only the friction surface is generously lubricated, so a rag soaked in gasoline can be used to clean it.