Clutch: Description and Operation

Clutch

There are two types of clutch assemblies used on the MINI. The MINI COOPER uses a conventional type clutch and flywheel arrangement, the MINI COOPER S has an upgraded clutch in combination with a dual mass flywheel.

MINI COOPER
The MINI COOPER Clutch System consists of the following components:

- Pressure Plate.
- Clutch Disc.
- Clutch Release Bearing.
- Clutch Hydraulic System.

System Components

Pressure Plate

The MINI COOPER pressure plate is constructed from steel. The pressure plate is located on the flywheel by 3 dowels and retained by 6 external torx headed bolt.


Clutch Disc
The Clutch Disc is constructed from steel, incorporates four double springs to absorb torsional vibration and has a friction surface on each side.
The 200 mm diameter clutch disc is marked to indicate the direction of mounting.


Clutch Release Mechanism

Clutch Hydraulic System




The master cylinder is located on the pedal box and is supported by 2 mounting points. The lines, which connect into the clutch slave and master cylinders, are quick release connectors. The brake master cylinder reservoir supplies fluid to the clutch master cylinder.





The slave cylinder is the same on all models, although the location is different. MINI COOPER slave cylinder is located on top of the gearbox, in front of the battery box. All slave cylinders are mounted with 2 bolts and have provisions for bleeding.