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Ceramic, twin disc, manual clutches, that are common in the North American heavy duty truck market, require frequent adjustments in order to function properly and perform according to their specifications. Wear on disc facings and friction surfaces of the flywheel, intermediate and pressure plates causes changes in the thickness of these components, resulting in a change of the release bearing position. As wear increases, the driver experiences a decrease and finally a complete loss of free play in the clutch pedal. The clutch is then out of adjustment. By manually adjusting the clutch, its efficiency can be restored, but this maintenance activity incurs labor costs and causes downtime losses. A self-adjusting clutch is a clutch containing a mechanical, automatic control system that measures instantaneous wear and then compensates the release bearing position. In this way the clutch is always in proper adjustment.