Description & Operation

WARNING: This page is about a different car, the 2002 Pontiac Sunfire, 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

All models use a single-plate clutch disc, a diaphragm spring-type pressure plate and a permanently lubricated clutch release bearing. Clutch hydraulic system provides automatic clutch release adjustment. The clutch system consists of the following components:

Master Cylinder And Reservoir
Clutch Actuator Connected To Hydraulic Tubing
Pressure Plat
Diaphragm Springs
Release Bearing
Clutch Disc
Torsional Springs

With the depression of the clutch pedal, the clutch master cylinder becomes pressurized from the force of the push rod into the master cylinder. This forces hydraulic fluid into the tubing from the master cylinder to the concentric slave cylinder. The concentric slave cylinder then engages by pushing the releasing bearing into the diaphragm spring and release the clutch. A hole in the cowl panel accommodates the master cylinder. A quick connect coupling helps route the hydraulic tubing. The concentric slave cylinder is inside the transmission and on the input bearing retainer. The hydraulic control system can be replaced without having to gain access to the clutch system internal components , simply engage the quick connect coupling mounted through the transmission housing. No adjustments to the clutch system are necessary. as the clutch wears, the fluid level in the master cylinder reservoir changes to compensates for clear wear. A new system will have fluid in the reservoir. An electrical switch on the push rod has 2 functions:

One function is a clutch interlock, ensuring the engine does not start unless the clutch pedal is engaged, positioned to the floor.
The remaining function is to cut off the cruise-control system, if equipped, when the clutch pedal is engaged.