Clutch with hydraulic release
1 - adjusting nut; 2 - locknut; 3 – withdrawal spring; 4 – the piston of the working cylinder of coupling; 5 - working cylinder; 6 – bleed fitting; 7 - flywheel; 8 - clutch hydraulic pipeline; 9 - crankshaft; 10 – a tank of the main cylinder; 11 - the piston of the main cylinder; 12 – pusher piston; 13 - main cylinder; 14 - pusher; 15 - clutch pedal servo spring; 16 - clutch pedal return spring; 17 - restrictive screw travel of the clutch pedal; 18 - clutch pedal; 19 - pressure plate; 20 - driven disk; 21 - clutch cover; 22 - pressure spring; 23 - clutch release bearing (release bearing); 24 – a primary shaft of a transmission; 25 - ball joint of the clutch release fork; 26 - clutch release fork; 27 – a pusher of a plug of deenergizing of coupling.
Design Description
The car is equipped with a single-disk, dry clutch, with a central pressure spring and hydraulic drive. It is mounted on the flywheel, inside an aluminum crankcase mounted on the cylinder block. Clutch is permanently closed (included); it is turned off by pressing the clutch release pedal.
The clutch is designed to smoothly connect the crankshaft of the engine with the transmission when starting the car from a place and to separate them when changing gears. It protects transmission parts from damage under dynamic loads. For this, a damper is mounted on the clutch disc (vibration damper).
The clutch consists of driving and driven parts and a release drive.
The leading part of the clutch is a non-separable unit («basket») includes three main parts: clutch cover, pressure plate and diaphragm pressure spring. The working surface of the pressure plate is polished, with a non-flatness of not more than 0.06 mm.
The leading part of the clutch is balanced. Permissible unbalance should not exceed 250 kgf·mm.
The driven part of the clutch is located on the splines of the leading (primary) gearbox shaft. It is a driven disk assembly with friction linings and a torsional vibration damper (damper). The driven disk is steel, divided by radial slots into twelve sectors, which are bent alternately in different directions. To the sectors of the driven disk, two friction linings are riveted independently of each other. The driven disk is connected to its hub through a damper, which dampens the torsional vibrations of the transmission during sudden changes in load. Wear of friction linings (when the distance from the lining surface to the rivets is less than 0.2 mm) it is advisable to replace the disk with a new one as an assembly, since by this time, as a rule, the damper elements and other parts wear out. We also replace the disc when the beating in the lining area is more than 0.5 mm, they are warped, cracked, oiled (oil leaking through the cuffs on the side of the engine or gearbox).
The hydraulic clutch release actuator consists of a master clutch release cylinder, «working» cylinder, fork, clutch, bearing, reservoir and clutch release pedal. The reservoir and hydraulic cylinders of the drive are interconnected by pipelines. The hydraulic clutch uses brake fluid.