Key Components:
Cover: a steel stamping or casting that houses the clutch components and attaches to the flywheel.
Pressure plate: a cast iron plate that provides a pivot fulcrum for the diaphragm spring, a friction surface for the disc and a mounting surface for the drive straps.
Diaphragm spring: a flat, spring-steel disc compressed between the cover and pressure plate that, when pushed by the release bearing, engages and disengages the clutch.
Pivot ring: a steel ring attached to the clutch cover that provides a fulcrum for the diaphragm spring.
Drive straps: flat, spring-steel strips that attach the pressure plate to the clutch cover and help lift the pressure plate away from the disc to disengage the clutch.
Clutch