- 1 - replenishment tank of the brake system,
- 2 - hose,
- 3 - clutch working pipeline,
- 4 - connecting nut, 15 Nm,
- 5 - bracket,
- 6 - clutch pedal,
- 7 - bolt, 20 Nm,
- 8 - axis,
- 9 - clutch master cylinder,
- 10 - gearbox,
- 11 - clutch slave cylinder,
- 12 - pumping tube.
- 13 - gearbox bracket,
- 14 - bolt, 25 Nm,
- 15 - nut, 2 Nm,
- 16 - gasket,
- 17 - gasket
Warning: When removing the clutch slave cylinder 11, do not depress the clutch pedal.
Warning: If a plastic support ring is installed in the clutch slave cylinder, lubricate the outer surface of the ring before installation. Apply molybdenum disulphide grease to the pusher head.
Warning: When assembling the clutch slave cylinder, push the piston into the cylinder just enough to allow the fixing bolt to be screwed in.
Warning: The bleed valve 12 will only be unscrewed when air is bled from the hydraulic clutch actuator. When removing air from the hydraulic clutch actuator, make sure that brake fluid does not come into contact with the gearbox.
The clutch is located between the engine and gearbox and is designed to disconnect and connect the engine crankshaft and the gearbox input shaft. The clutch is an integral part of the transmission to keep the vehicle on the road when in gear, pull off smoothly and change gears without noise or risk of damaging parts.
When the clutch is engaged, i.e. when the clutch pedal is in the up position, the disc spring of the leading part of the clutch moves the clutch pressure plate towards the engine. In this case, the clutch disc, equipped with friction linings, is sandwiched between the pressure plate and the flywheel, and torque is transmitted from the engine to the gearbox. When the clutch pedal is depressed, the clutch thrust bearing moves the pressure plate backwards. This releases the clutch disc, after which the engine shaft and gearbox shaft can rotate independently of each other.
All models are equipped with a dry single-plate clutch, which consists of a clutch disc, pressure plate, belleville spring, casing and pressure bearing.
The clutch disc moves freely on the splines of the input shaft of the gearbox and is clamped between the flywheel and the pressure plate by the force that the belleville spring creates. Friction linings are riveted on both sides of the clutch disc. The leading part of the clutch disc is connected to the hub through the parts of the torsional vibration damper, which provides an elastic connection between them. The need for a torsional vibration damper is caused by the following.
With a sharp change in the speed of the car, hitting bumps in the road, abrupt engagement of the clutch, as well as due to uneven engine operation, dynamic loads occur in the vehicle transmission, causing twisting (unwinding) transmission shafts. Uneven engine torque can cause significant overloads in the transmission due to the occurrence of torsional vibrations and resonance when the frequencies of the transmitted loads coincide with the natural frequencies of the transmission. Elastic oscillations of the transmission lead not only to the appearance of noise in mechanisms and assemblies, but also to dangerous vibrations, and sometimes to breakage of parts, when the oscillation amplitude reaches a large value. The energy of torsional vibrations is absorbed by the absorber.
The release bearing is mounted on the front side of the gearbox on the guide bush. The bearing is moved by the clutch release lever. Depressing the clutch pedal moves the piston in the master cylinder and compresses the fluid, which is transmitted through the hose to the clutch slave cylinder. Under pressure, the clutch slave cylinder piston moves and actuates the clutch release lever. The clutch release lever moves the release bearing, which acts on the pressure plate spring and moves the pressure plate away from the clutch plate. Clutch adjustment is automatic.
Depending on the design of the flywheel installed on the engine, different clutch discs are used. If a flywheel is installed, consisting of two sections with a spring and a damping system, then a clutch disc without vibration damper springs is installed. If the engine is equipped with a one-piece flywheel, then a clutch disc with vibration damper springs is installed (classic clutch disc).
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