Check spend as follows:

- Before you will check up a free wheeling of the piston of the brake cylinder, put as an emphasis a clamp with wooden overlays in скобу. So the piston will be protected from damage — it cannot leave the cylinder entirely. The overlay on the other hand a disk should be established;

- Ask your assistant to press a brake pedal cautiously. If the piston has jammed, strengthen pressure upon a pedal. If the piston has moved out from a place return it back by means of an assembly shovel. Repeat procedure until the piston it will not be easy to slide in the cylinder;

- If the piston does not move, replace скобу.