Cause |
Elimination |
A. The clutch is slipping. |
- Automatic adjustment is defective; the initial pressure in the system (1 bar) is too high (the primary pressure valve is clamped).
- The clutch pads are worn out.
- The clutch clamping force is low.
- The clutch gasket is oily.
- The clutch was overheated.
|
- If necessary, replace the clutch master cylinder with the clutch release bearing, change the initial pressure valve.
- Replace the slave disk.
- Replace the clutch pressure plate. Replace the driven plate at the same time.
- The radial shaft seal ring on the crankshaft or gearbox input shaft is leaking. Replace the worn ring.
- Check the engine flywheel, polish it if necessary, replace the clutch completely.
|
B. The clutch does not disengage. |
- See A1.
- The clutch slave or master cylinder is defective.
- Air in the hydraulic system.
- The driven disk is clamped on the gearbox shaft.
- The slave disk is broken.
- The driven disk is warped or the gasket is torn off.
- After standing for a long time, the gasket rusted to the flywheel.
|
- —
- Replace defective cylinders.
- Add liquid; ventilate the clutch.
- Clean the splined joint thoroughly and lightly lubricate it.
- Replace the slave disk.
- Start off as described in the section "Driving without engaging the clutch". Keep the clutch pedal depressed at all times. Press the accelerator pedal sharply and then release it to break the clutch.
- Replace defective parts.
|
B. The clutch does not disengage and slips at the same time. |
|
The automatic clutch drive is defective. |
Replace. |
G. The clutch is jerking. |
- See A3.
- The engine or transmission mount is weak or defective.
- Hard spots (roughness on the flywheel or pressure plate).
- Incorrect gaskets (hardness level). Torsional vibration damper is worn out.
|
- Secure or replace engine or transmission mounts.
- The flywheel will need to be replaced later, but replace the pressure plate immediately.
- Replace the slave disk.
|
D. Noises in the clutch. |
- Imbalance of the clutch pressure plate or driven disc.
- The torsional vibration damper spring is worn out.
- The clutch release bearing is defective.
- The connecting elements in the automatic clutch drive are worn out (broken).
|
- Replace defective parts.
- Replace the slave disk.
- Replace the central distributor cylinder with integrated clutch release bearing.
- Replace the automatic clutch actuator.
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