1. Disconnect the wire from the terminal «minus» battery.
2. Turn away a stopper of a tank of the main brake cylinder and pump out a brake liquid from a tank, for example, a rubber bulb.
3. Turn away nuts of fastening to the cylinder of four pipelines and take away pipelines aside.
Note. For clarity, the master cylinder reservoir has been removed. However, the master brake cylinder can be removed along with the reservoir.
Note. Plug the pipelines in any way possible (for example, by putting protective caps on the ends of the valves to release air), to prevent leakage of brake fluid.
4. Turn off two nuts of fastening of the main brake cylinder to the vacuum amplifier...
5.... and remove the main brake cylinder.
Note. Pay attention to the fact that the flange of the brake master cylinder is sealed with a rubber ring. Replace a severely compressed, hardened or torn ring.
6. Install the parts in the reverse order of removal, fill in the brake fluid and bleed the system (see «Bleeding the hydraulic drive of the brake system»).