ZEST BOLT Service Manual

DRIVETRAIN C549 1 4.1.1 CLUTCH 4.1.1.1 HYDRAULIC CLUTCH ACTUATION LAYOUT (1.3 QUADRAJET) Constructional specifications: The clutch is single dry plate type, with a thrust bearing in permanent contact with the pressure spring. The driven plate is driven by pressure exercised by a diaphragm spring. The clutch release takes place via the hydraulic system operated by the pedal. Friction materials free from non- environmentally friendly components have been adopted; special care has been taken in the development of new materials and the clutch assembly with a view to guaranteeing excellent performance in terms of modulation and driving comfort with a consequent reduction in weight compared with traditional hydraulic operation. The clutch master cylinder has undergone considerable improvements compared with the components used normally; it comprises: - Plastic casing which makes a further contribution to a reduction in the weight; - Steel cylinder; - Plastic material piston. The material for the piston and the rubber seals have been specially developed for operating with long strokes; in addition, the seal produced by the rubber steel contact is excellent compared with traditional type clutch pumps where the seal is on cast iron. 01 Brake/clutch fluid reservoir 06 Pipe connecting pump and slave cylinder 02 Hose from reservoir to clutch master cylinder 07 Clamps 03 Clutch master cylinder 08 Clutch slave cylinder 04 Control mounting bracket 09 Transaxle 05 Clutch pedal