Cause | Elimination Method |
Incomplete clutch disengagement (clutch «leads») | |
Increased gaps in the clutch release drive | Adjust clutch release actuator |
Warping of the driven disk (end runout more than 0.5 mm) | Straighten the disc or replace with a new one |
Irregularities on the surfaces of the friction linings of the driven disk | Replace pads or driven disc assembly |
Loose rivets or broken disc friction linings | Replace pads, check disc end runout |
Jamming of the hub of the driven disk on the splines of the input shaft of the gearbox | Clean the splines, coat with LSTs-15 grease. If the splines are dented or worn to the point of seizing, replace the input shaft or driven disc |
Breakage of the plates connecting the thrust flange to the clutch cover | Replace clutch cover with pressure plate assembly |
Air in the hydraulic drive system | Bleed the system |
Leakage of fluid from the hydraulic drive system through connections or damaged pipelines | Tighten connections, replace damaged parts, bleed the hydraulic drive system |
Fluid leaking from master cylinder or clutch release cylinder | Replace o-rings, bleed system |
The hole in the reservoir cap is clogged, which caused a vacuum in the master cylinder and air leaks into the cylinder through the seals | Clean the hole in the reservoir cap, bleed the system |
Leakage due to contamination or wear of the front O-ring of the master cylinder | Clean O-ring, replace if worn |
Loosening the compression spring fastening rivets | Replace clutch cover with pressure plate assembly |
Skewed or warped pressure plate | Replace clutch cover with pressure plate assembly |
Incomplete engagement of the clutch (clutch «slips») | |
There are no gaps in the clutch release drive | Adjust clutch release actuator |
Increased wear or burning of the friction linings of the driven disk | Replace friction linings or driven disc assembly |
Lubrication of the friction linings of the driven disk, flywheel and pressure disk surfaces | Thoroughly rinse oiled surfaces with white spirit, eliminate the causes of oiling discs |
Clogged compensation hole of the master cylinder | Flush the cylinder and clean the compensation hole |
Damaged or stuck clutch actuator | Troubleshoot causing jams |
Jerks during clutch operation | |
Jamming of the hub of the driven disk on the splines of the input shaft | Clean the splines, lubricate with LSTs-15 grease. If the splines are dented or worn to the point of seizing, replace the input shaft or driven disc |
Lubrication of the friction linings of the driven disk, flywheel and pressure disk surfaces | Thoroughly rinse the oiled surfaces with white spirit and eliminate the cause of the oiling of the discs |
Seizure in the clutch release mechanism | Replace deformed parts. Eliminate causes of jamming |
Increased wear of the friction linings of the driven disk | Replace the pads with new ones, check for damage to the disc surface |
Loosening the rivets of the friction linings of the driven disk | Replace defective rivets and, if necessary, linings |
Surface damage or buckling of the pressure plate | Replace clutch cover with pressure plate assembly |
Increased noise when disengaging the clutch | |
Worn, damaged or leaking lubricant from the clutch release bearing | Replace bearing |
Wear of the forward bearing of a primary shaft of a transmission | Replace bearing |
Increased noise when engaging the clutch | |
Breakage or reduction of elasticity of springs of a damper of a conducted disk | Replace driven disc assembly |
Breakage, reduction of elasticity or jumping off of the release spring of the clutch fork | Replace clutch cover with pressure plate assembly |