Clutch Slip - Causes 1) Worn clutch friction Lining. 2) Lack of free play in control mechanism. 3) Oil on linings. Ç|Ç}Ç~ÇÇÇÇüÇéÇâÇäÇàÇåÇçÇClutch Drag - Causes 1) Too much free play in the control mechanism. 2) Air in the hydraulic control 3) Clutch plate sticking on splines. tch Slip - Causes Clutch Fierceness - Causes 1) Broken or loose engine or gearbox mountings. 2) Oil on linings. 3) Sticking release mechanism tch Drag - Causes Clutch Judder - Causes 1) Broken or loose engine or gearbox mountings. 2) Oil on linings. 3) Faulty pressure plate. tch Fierceness - Causes Clutch Slip - Remedies 1) Replace clutch plate 2) Adjust mechanism. 3) Replace clutch plate, replace oil seals, clean components. tch Judder - Causes Clutch Drag - Remedies 1) Adjust mechanism. 2) Replace seals and bleed system. 3) Clean splines on clutch plate and primary shaft. tch Slip - Remedies Clutch Fierceness - Remedies 1) Replace or tighten mountings 2) Replace clutch plate and seals, clean components. 3) Overhaul mechanism. tch Drag - Remedies Clutch Judder - Remedies 1) Replace or tighten mointings 2) Replace clutch plate and seals, clean components. 3) Replace pressure plate. tch Fierceness - RemediesClamping Force The clamping force of the clutch plate against the flywheel face depends on the strength of the springs the number of springs and the amount of compression tch Judder - Remedies Friction Material The clutch plate friction material is usually made from asbestos. mping Force Master Clutch Cylinder Acts as a hydraulic pressure transmitter. It contains a sealed piston sliding within a cylindrical bore whenever the clutch pedal is depressed. ction Material Clutch Connecting Pipes Serve as hydraulic pressure conduits and convey the pressurised fluid to the slave cylinder. ter Clutch Cylinder Clutch Slave Cylinder Acts as a pressure receiver. A sealed piston slides in response to the movement of the master cylinder piston. tch Connecting Pipes Multi Plate Clutches These use more than one clutch plate. They are found mainly on motorcycles and heavy goods vehicles. See also Multi-Plate Clutches Advantages tch Slave Cylinder Multi-Plate Clutches Advantages Multi-Plate clutches are used because for the same application this clutch can be made much smaller in diameter than the single- plate type. ti Plate Clutches Wet Clutches Multi Plate clutches are usually wet clutches. Wet clutches operate in oil, the oil serving two purposes: 1) Smooth clutch engagement 2) Reduced wear on the plates. ti-Plate Clutches AdvantaSpiral Bevel Transmission A type of geared tooth for the final drive transmission. Tooth contact follows a spiral line, action between the teeth is mainly rolling accompanied by some sliding Clutches Spiral Bevel - Advantages 1) Quieter running compared with the straight bevel. 2) Stronger gear teeth. 3) Longer life owing to the more gradual engagement of gear teeth. ral Bevel Transmission Spiral Bevel - Disadvantages Because of some sliding action being present friction is increased. ral Bevel - Adv clutches Object of Gearbox 1) To multiply the turning effort of the engine. 2) Provide a permanent position of neutral. 3) Provide a means of reversing the vehicle. A type of geared tootClutch Friction Plate Pressure Is obtained using either a diaphragm spring or a multi- spring assembly. Pedal link- age is either mechanical or hydraulic. ect of Gearbox Divided Prop Shaft The reasons for using divided prop shafts are: 1) Reduced vibration. 2) Smaller diameter shafts can be used. 3) More suited to high speed. tch Friction Plate PressuClutch Bleed Valve A bleed valve is fitted to the clutch slave cylinder to dispel air which may be trapped in the system. One main reservoir may supply both brake and clutch cyl's. ided Prop Shaft Synchromesh Gearbox As its name suggests the synchromesh gearbox has a synchronising device which equalises the speeds of the two rotating gear shafts to aid smooth gear selection.
