The master cylinder is mounted on the clutch pedal bracket.

In the body 2 of the main cylinder, cylindrical "A" and compensation "B" cavities are made, in which the working fluid is located.

The body is covered with a protective cover.

Kamaz clutch master cylinder

A piston 3 with a sealing collar is installed in the cylindrical cavity "A". The piston has a hole that is blocked during the working stroke by the sealing ring located at the end of the rod 1.

When the clutch pedal is released, piston 3 is in the upper position under the influence of spring 11 (see Fig. 1).

The cylindrical cavity “A” is closed from below by a plug, in the center of which there is a hole for connecting hydraulic drive pipelines.

When the clutch pedal is released, the cylindrical “A” and compensation “B” cavities communicate with each other through a hole in the piston and cuff, since there is a gap between the end of the rod 1 and piston 3.

When you press the clutch pedal, the rod moves, closes the hole and separates the cavities "A" and "B".

With further movement of the pedal, the liquid from the cylindrical cavity A is displaced by the piston through the pipelines of the hydraulic drive to the amplifier.

The normal liquid level in the tank should be 15...20 mm below the upper edge of the neck.