8.13. Repair of the main cylinder of coupling

Main cylinder of coupling

1 – (to replace) a spring ring;
2 – pusher;
3 – piston;
4 – (to replace) a stopper of the piston;
5 – spring;
6 – valve stopper;
7 – spring;
8 – block of valves;
9 – case


Do not damage a pusher, and the surface of the main cylinder of coupling contacting to the piston.

1. Press a pusher and, passatizham, remove an internal spring ring.
2. Remove a pusher, the piston, a piston stopper, a spring, a valve stopper, a spring and the block of valves.
3. The suitable tool unbend a stopper spline from the piston.



Clear the dismantled details in solvent and blow all details and channels compressed air.

Do not mix various brands of liquid for the hydraulic drive of coupling.

Before assembly grease with the specified liquid for coupling the piston and diameter of boring of the cylinder.

At assembly it is necessary to establish a new spring ring and a stopper of the piston.

1. The suitable tool bend a stopper spline in a piston flute.
2. Install the block of valves and other details in the case of the main cylinder of coupling.
3. Establish a spring ring, previously having pressed a pusher.