CAUSE
|
ELIMINATION METHOD
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Clutch pedal does not return to its original position
(on vehicles with hydraulic clutch)
| |
Air ingress into the hydraulic drive, working fluid level below normal | Restore fluid level to normal, remove hydraulic air. |
Seizure of pistons in the main or working cylinder | Replace faulty parts, bleed air from hydraulic drive. |
Leakage of working fluid in the main or working cylinder | |
Clutch pedal does not return to its original position
(on vehicles with mechanical clutch)
| |
Seized clutch cable. Faulty self-regulation mechanism (if available) | Replace rope. |
Clutch pedal does not return to its original position
(all cars)
| |
Return spring defective (if available) | Replace return spring. |
Clutch pedal stuck | Clean and lubricate the pedal shaft. Replace if necessary sleeve. |
Jamming of the clutch release fork on the clutch housing | Clean the fork pivot. Make necessary repairs. |
Sticking or increased friction between parts in the clutch basket | Clean and lubricate sliding areas. Carry out the necessary repair. |
Increased clearance of the clutch release bearing on the guide sleeve, bearing grip | Replace guide bushing and clutch release bearing. |
Pressure plate diaphragm spring failure | Replace pressure plate assembly. |
Too much "tough" clutch pedal (on
vehicles with manual clutch)
| |
Seized clutch cableCorrosion of the sheathed cable. Faulty self-regulation mechanism (if available) | Replace drive cable. |
Jamming of the clutch release fork on the clutch housing | Clean and lubricate the pivot joint. Replace bushing. |
Too much "tough" clutch pedal (All
cars)
| |
Clutch pedal stuck | Clean and lubricate the pivot joints. Replace bushing. |
Warning! Before checking, disconnect the master cylinder pusher or drive cable from the pedal. | |
Jamming of the peripheral spring. Peripheral spring defect | Clean and lubricate the pivot joints. Replace spring. |
Increased elasticity of the return spring (in the presence of). Installed wrong return spring | Install the correct type of return spring. |
Increasing the force required to disengage the clutch due to worn friction linings | Inform the customer: Clutch release force increases with increasing wear. |
Sticking or increased friction between parts in the clutch basket | If the distance from the rivet heads to the lining surface exceeds 0.1 mm, replace the clutch disc. |
Increased clearance of the clutch release bearing on the guide sleeve, bearing grip | Clean and lubricate mating parts. Worn guides replace bushings. |
Wear of the contact surfaces of the clutch release bearing and clutch release forks | Replace worn parts. |
Wrong springs installed on pressure plate | Install springs with the correct part number. |
Jamming of the hub of the driven clutch disc on the splines of the primary shaft | If necessary, replace the driven disk. Clean hub splines and input shaft splines from corrosion and grease residues. Apply a thin layer grease G 000 100 input shaft splines. Remove excess grease by moving the driven disk along the splines of the input shaft in both directions. |
Increased noise when disengaging the clutch (on cars
with mechanical clutch)
| |
Transmission noise enters the passenger compartment through the drive cable
clutch
| Replace anti-noise parts of the body or strengthen them with additional anti-noise protection. |
Clutch cable stuck (sticking, increased friction, unweaving) | Replace drive cable. |
With the clutch pedal fully depressed, the diaphragm spring pressure plate touches the clutch disc (pedal free play less clutch) | Adjust clutch pedal free play. |
Faulty self-regulation mechanism (if available) | Replace drive cable. |
Requires lubrication of the friction surfaces of the clutch pressure plate and diaphragm spring | Lubricate the contact surfaces with a thin layer of grease G 000 100. Replace worn parts. |
Clutch pedal sticking, pedal axle bent | Clean and lubricate the pedal shaft. Replace if necessary sleeve. |
Jamming of the axis of the peripheral spring due to increased friction, misalignment | Clean and lubricate the axle. |
Increased noise from the return spring (if provided by design) | Lubricate the spring axle. |
Defective clutch release bearing or bearing race, contact surface wear (warpage) | Usually fixed by replacing the bearing. Replace damaged guide bushings. |
Defect of the contact surfaces of the pressure plate (bend or breakage of the edges of the petals of the diaphragm pressure spring). Alignment violation clutch release bearing | Replace pressure disc. Check the condition of the release bearing clutch and bearing race. Replace if necessary. Check Status centering bushings. |
Crankshaft guide bearing wear (if available), misalignment engine and gearbox installations | Replace the bearing, apply grease based on molybdenum disulphide. Check the condition of the centering sleeve. |
Incorrect installation of the clutch disc | Install the driven disk correctly. |
A drive disk that does not match this type has been installed clutch | Install the correct type of disk. |
Rattling noise when shifting into gear or reverse
the gearshift mechanism is stuck, gear shifting is impossible,
clutch not working (on vehicles with hydraulic clutch)
| |
Lowering the level of the working fluid. Air entering the hydraulic drive. Fluid leakage from the working or master cylinder, the elasticity of the tube walls hydraulic drive. Incorrect adjustment of the clutch release fork | Check hydraulic drive. Restore fluid level pump hydraulic. Replace defective parts. Restore Level working fluid, bleed the hydraulic drive. Adjust correctly. |
Rattling noise when shifting into gear or reverse
the gearshift mechanism is stuck, gear shifting is impossible,
clutch not working (on vehicles with mechanical clutch)
| |
Part misalignment | Replace defective parts. |
Pedal free play is too high | Check pedal free play, adjust if necessary. |
Incorrect drive cable installed for this clutch (extended length) | Install the correct type of drive cable. |
Drive cable jam | Replace rope. |
Faulty self-regulation mechanism (if available) | |
Rattling noise when shifting into gear or reverse
the gearshift mechanism is stuck, gear shifting is impossible,
clutch not working (for all cars)
| |
Insufficient clutch pedal travel (interferes with the rug or flooring under the pedal). Clutch won't fully disengage | Notify the customer. |
The rattle is caused only by the engagement of the reverse gear | Notify the customer. Before turning on the rear depress the clutch pedal and wait 3-6 seconds depending on the diameter slave disk. First, the input shaft of the gearbox with the driven disk must stop. |
Incorrect adjustment of the gear shift mechanism | Check, adjust if necessary. |
Lubrication of the shift lever support is required. Violation correct fit of the gearshift mechanism parts | Lubricate the gear shift mechanism, replace faulty details. |
Sticking or increased friction of the clutch disc on input shaft splines. Drive hub corrosion or damage when installing. Disturbance of centering of a nave of a conducted disk | Check hub splines for damage, if necessary replace drive disc. Remove corrosion and grease residues from the hub and input shaft splines. Apply a very thin layer to the input shaft splines grease G 000 100. Remove excess grease by moving the disc over the primary shaft on both sides. If the hub is not centered, check the position centering bushings. Check the condition of the clutch release bearing, bearing race, pressure plate and crankshaft guide bearing. Replace if necessary. |
Pressure plate protrusion too small (disk installed wrong type) | Replace pressure disc. |
Defective crankshaft guide bearing. Gearbox input shaft rotates when the clutch is disengaged | Replace the guide bearing, put grease on the base molybdenum disulfide. Check the condition of the centering bushings. If necessary replace. Check the condition of the gearbox input shaft. |
Violation of the mutual alignment of the engine and gearbox (missing centering sleeves), due to which the ring of the driven disk is deformed | Before installing the gearbox, install the centering bushings. Check condition of the driven disc, pressure plate and guide bearing (If available). Replace if necessary. |
Defective crankshaft guide bearing | |
Wear of friction linings due to gear engagement at high revolutions, i.e. downshifting at high speed movements | Replace the driven disk, notify the customer. |
Wear of friction linings due to intentional slipping of the clutch during acceleration | |
Defective synchronizers and/or gearshift mechanism | Repair checkpoint. |
Incorrect pressure plate installation. Slave deformation disc due to incorrect driving | Check the condition of the parts. Replace if necessary. Check the position of the mounting studs. If after this replacement, the grinding does not disappears, then check the condition of the splines on the hub of the driven disk and the freedom cranking the gearbox input shaft, check the condition of the guide bearing (if available) crankshaft, repair gearbox. |
Grinding is heard in 2nd gear, and only when the transmission is cold | Notify the customer. Change if necessary oil in gearbox (see subsection 9.1.2 and subsection 9.2.2), pouring oil with a higher viscosity (see subsection 1.14). |
Increased thickness of the driven disk | Replace driven disk. |
Adhesion of the driven disk to the flywheel due to corrosion (automobile not used for a long time, high relative humidity) | Lightly clean adjacent surfaces. For severe corrosion replace parts. |
Clutch slips (vehicles with hydraulic clutch)
| |
Piston of the main or working cylinder does not return to its original position | Replace master or slave cylinder. Change working fluid pump hydraulic. |
Clutch slips (motor vehicles
clutch)
| |
Incorrect drive cable adjustment (insufficient free rope travel) | Adjust cable. If necessary, replace with a cable of the desired type. |
Faulty self-regulation mechanism (if available) | Replace cable if necessary. |
Cable jamming | Replace cable if necessary. |
Clutch slips (all cars)
| |
Wrong type of driven and pressure plate installed | Replace with discs of the correct type. |
Deterioration of the driven disk, burnout of the pressure disk, formation furrows due to overheating, deformation of the pressure plate due to incorrect installation, weak force of the pressure plate. Improper driving under normal wear and tear | Replace driven and pressure plates. Inform customer |
Increased friction of transmission parts, sticking pedal rod | Clean and lubricate swivel joints, if necessary repair. |
Lubrication of clutch discs and flywheel. Wear of the crankshaft seal. Lubrication of friction surfaces due to excessive lubrication of the hub slave drive | Replace driven disk. Clean the contact surfaces of the pressure disc and flywheel. Replace the crankshaft oil seal, remove excess grease from the primary shaft. |
Incorrect installation of the slave disk | Install the disk correctly. Check the condition of the slave drive. Replace if necessary. |
Clutch "leads", jerks at the beginning of the movement
(vehicles with hydraulic clutch)
| |
Incorrect clutch adjustment | Adjust correctly. |
Air ingress into the hydraulic drive, defects in the main and working cylinders | Replace defective parts. Check the level of the working fluid, pump the hydraulic drive, check for leaks. |
The master or slave cylinder tappet does not return to initial position | Replace defective parts. If necessary, change work liquid. Pump the hydraulic drive. |
Clutch "leads", jerks at the beginning of the movement
(vehicles with mechanical clutch)
| |
Cable jamming | Replace rope. |
Pedal sticking | Before checking, disconnect the cable from the pedal. Clear and the need to lubricate the pivot joints. Replace bushing if necessary. |
Seizure or increased friction of the clutch release fork | Clean and lubricate the pivot joints. If necessary replace bushing. |
Clutch "leads", jerks at the beginning of the movement
(all cars)
| |
Unstable engine operation | Check engine adjustment, correct cause. |
Driving errors: RPM too low when accelerating | Notify the client. |
Wrong drive type installed | Replace disk. |
Noises at idle
| |
Breakage of damping springs | Replace driven disk. |
There is no damping plate on the driven disk (elevated idle noise) | Install damping plate. |
Deformation, breakage or ovality of the pressure plate | Replace pressure disc. |
Unstable engine operation | Check engine settings, correct cause. |
Violation of the correct position of the engine due to the softness of the parts his pendants | Check engine mount parts. Replace if necessary. |
Defective shock absorbers | Replace shock absorbers. |
Lubrication of the friction linings of the driven disk, contact pressure plate and flywheel surfaces | Determine the cause of the oil spill. If necessary, perform repair. Replace driven disk. Clean pressure plate and flywheel. |
Increased clearance of the clutch release bearing on the guide sleeve (uneven distribution of force acting on the diaphragm pressure plate spring) | Replace bearing and guide bush. Check Status parts and joints. |
Uneven operation of the pressure diaphragm spring due to increased backlash of the clutch release bearing, causing uneven distribution of force along the contour of the diaphragm | Check the contact surface of the friction linings of the driven disk to the bearing surface of the flywheel and the condition of the diaphragm spring. Replace pressure plate if necessary. Replace bearing and guide sleeve. |
Deformation of the clutch basket during assembly, as a result what violates the correct position of the pressure plate | Remove grease from flywheel and pressure plate. Upon detection serious damage (scuff marks, traces of overheating, grooves) replace. Delete grease from the hub and from the input shaft splines. Apply a thin layer of lubricant G 000 100 on the input shaft splines. Remove excess grease by moving driven disk along the input shaft in both directions. |
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