Clutch Driven Plate

The diaphragm spring comprises a cast ring with eighteen fingers on its inner diameter. Two circular steel fulcrum rings are attached to the cover and allows the diaphragm spring to pivot between them. The diaphragm spring is not physically attached to the pressure plate. When pressure is applied to the diaphragm spring fingers from the release bearing, the diaphragm spring pivots between the fulcrum rings and moves away from the pressure plate. The drive straps attaching the pressure plate to the cover move the pressure plate away from the clutch driven plate.

Clutch Driven Plate

1 Damper springs 2 Pre-damper springs 3 Inner plate 4 Friction damper

5 Splined hub 6 Central plate 7 Outer plate 8 Friction material

The clutch driven plate is sandwiched between the flywheel and the pressure plate of the clutch cover assembly. The clutch driven plate has a splined hub which engages with the splines on the primary shaft from the gearbox. The splined hub is located in an inner plate which contains four compression pre-damper springs. The inner plate is retained by the springs which can compress in both directions to cushion engine vibration at idle speed. The inner plate is located on eight larger compression springs which are located in a central plate. The hub is sandwiched between the central plate and the friction damper. The friction damper comprises friction washers located between the hub and the central plate. The friction washers reduce transmission noises and vibrations.

The drive from the inner plate is transferred to the central plate through the larger compression springs. Two outer plates are located either side of the central plate. The central plate is connected to the outer plate in slots and retained with rivets. The slots allow the central plate to move and compress the springs absorbing shock loads when the clutch is engaged or when the engine is decelerating. One of the outer plates is marked 'flywheel side'. This outer plate must face the flywheel when installed.

One of the outer plates has a spring steel plate riveted to it. The plate provides the attachment surface for the clutch driven plate friction facing material.

The facing material comprises two discs which are riveted to each side of the spring steel plate. The rivets are secured through recessed holes in the facing material and emerge in clearance holes in the opposite disk.