Clutch: single disc, actuated by pressure plate with diaphragm spring, hydraulically controlled.
The clutch cover is bolted to the rear surface of the flywheel, the friction disc is located between the pressure plate and the friction surface of the flywheel. The disc hub is aligned with the input shaft of the gearbox and moves freely along the grooves. The disc friction lining is riveted to each side of the disc, and the disc hub is spring-loaded to absorb transmission shocks and ensure smooth engagement of the drive.
When the clutch pedal is depressed, the push rod of the working cylinder moves the release lever forward, and the release bearing presses on the fingers of the diaphragm spring. The center of the spring moves inward, and the outer part of the spring moves outward and releases the pressure plate from the friction disc. This disconnects the connection to the gearbox.
When the clutch pedal is released, the diaphragm spring presses the pressure plate against the linings on the friction disc while slightly pushing the disc along the slots in the input shaft into engagement with the flywheel. The friction disc is firmly clamped between the pressure plate and the flywheel. This ensures that the drive is enabled.
As the pads on the friction disc wear, the initial position of the pressure plate shifts towards the flywheel, moving away from the fingers of the diaphragm spring. Cable operated clutches require some adjustment, but hydraulic clutch models require no adjustment. The amount of hydraulic fluid in the circuit automatically compensates for wear each time the clutch pedal is depressed.
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