Description And Operation: Clutch

The clutch system includes:

• flywheel
• clutch disc
• clutch pressure plate
• clutch master cylinder
• clutch slave cylinder
• hydraulic line
• clutch pedal

The clutch system transmits fluid pressure to the slave cylinder, which in turn moves the clutch diaphragm spring.

The clutch master cylinder uses brake fluid and shares a common reservoir with the brake master cylinder.

The clutch is a single plate, dry-friction disc with a diaphragm-style spring clutch pressure plate. The clutch disc has a hub which is splined to the input shaft. The clutch disc has friction material where it contacts the flywheel and the clutch pressure plate. Torsion springs on the flywheel help absorb the engine torque pulses. The clutch pressure plate applies pressure to the clutch disc, holding it tightly against the surface of the flywheel. In the engaged position, the diaphragm spring holds the clutch pressure plate against the clutch disc, so that engine torque is transmitted to the input shaft.

When the clutch pedal is pressed, the slave cylinder with an integral release bearing pushes the diaphragm spring center of the clutch pressure plate toward the flywheel. The diaphragm spring pivots at the fulcrum, relieving the load on the clutch pressure plate. Steel spring straps riveted to the clutch pressure plate cover pull the clutch pressure plate from the clutch disc, disengaging the engine torque from the transaxle and enabling the gears to be changed.