What causes the heavy clutch of large trucks?

The clutch cable is damaged, the clutch plate is worn thin, the release bearing seat is oiled, the pressure plate diaphragm spring is damaged, and the vehicle release bearing is too tight.

1. Clutch cable is damaged. This is an obvious disadvantage of cable clutch. The damage of clutch cable leads to the increase of friction resistance and the weight of clutch pedal.

2. The clutch plate is worn very thin. With the wear and tear of the clutch plate becoming thinner, the deformation of the diaphragm spring increases, which leads to uneven stress on the spring when stepping on the clutch, thus increasing the pedal resistance.

3. Lubricate the separation bearing seat. In particular, the clutch plate will produce a lot of dust when it works. Sticking to butter will make butter more sticky and harder, and then the clutch will become heavy.

4. The diaphragm spring of the pressure plate is damaged. When stepping on the clutch, the diaphragm spring should be in contact with the release bearing, so the diaphragm spring is the easiest to wear. Once worn, it is easy to cause uneven stress on the spring when stepping on the clutch.

5. The vehicle release bearing is too tight. If the release bearing is too tight, the pressure of the fork on the release bearing will be uneven when stepping on the clutch, which will make the pressure of the release bearing on the diaphragm spring uneven and increase the pedal resistance.