Checking the technical condition of the clutch

The clutch is switched on (with the pedal released) shouldn't «slip» and without loss to transfer torque from the engine to the transmission, and with the clutch pedal depressed, completely disconnect the transmission from the engine. Clutch engagement should be smooth, without jerks.

The sequence of repair work

1. Check the travel of the clutch pedal and, if necessary, adjust it (see fig., and "Clutch release actuator - adjustment").

2. With the engine off, press the clutch pedal several times. We are convinced that there are no jams in the clutch release mechanism, the absence of squeaks, knocks and other extraneous noises during its operation.

3. We start the engine on the car. If a howling sound is heard from the clutch housing, the release bearing is most likely worn out. Disconnecting the cable from the clutch release fork (see "Clutch cable - removal and installation") and slightly turning the clutch fork clockwise, we remove the release bearing from the diaphragm spring. If the clutch release bearing is defective, the sound will disappear.

4. With the engine running, press the clutch pedal all the way and shift into gear. Switching on should be easy, without crackling and «crunch». If a crackling sound is heard when shifting gears, and turning off is difficult, then the clutch is not completely disengaged.

5. With the engine running and the first gear engaged, gradually releasing the pedal, we check the smooth engagement of the clutch, the absence of jerks or extraneous sounds at the moment of engagement.


6. In motion in third or fourth gear, sharply press the pedal «gas». If the crankshaft speed increases quickly, and the car accelerates sluggishly, then the clutch disc slips. This is also evidenced by the appearance in the cabin of the smell of burning, emitted by very hot friction linings of the clutch disc.

If the above symptoms of malfunctions are not detected during the diagnostic process, the clutch is in a technically sound condition.