13:14. Main brake cylinder
1 – pressure regulator;
2 – main brake cylinder;
3 – stopper;
4 – compensation tank;		 5 – lock ring;
6 – primary piston;
7 – secondary piston;
8 – nut, 8–12 N • m.

Removal
PERFORMANCE ORDER
1. Disconnect the electric socket from the sensor of level of brake fluid.
2. Disconnect tubes of the brake system from the main brake cylinder and close the opened openings suitable traffic jams.
Prevention

Brake fluid dissolves paint, plastic and isolation of wires therefore at casual hit of liquid on a paint and varnish covering of the car or its components wash out their large number waters.
3. Disconnect an arm of the regulator of pressure and remove the main brake cylinder. Turn off nuts of fastening of the main brake cylinder.

Dismantling
PERFORMANCE ORDER
1. Remove a stopper and merge brake fluid from a tank.
2. Remove a tank from the main brake cylinder.
Prevention

If necessary, fix the main brake cylinder in a vice, clamping its main part of the case, but not a flange.
3. Get primary and secondary pistons from the case of the main brake cylinder.
Prevention

Be careful not to damage diameter of boring of the main brake cylinder.
Do not disassemble primary and secondary pistons.

Check
PERFORMANCE ORDER
1. Check the internal surface of the case of the main brake cylinder for lack of a rust and development.
2. Check primary and secondary pistons for lack of a rust, zadir or wear.
3. Check primary and secondary pistons for lack of deterioration in their state.

Assembly
PERFORMANCE ORDER
1. Grease with the recommended brake fluid the internal surface of the main brake cylinder and the external surfaces of primary and secondary pistons.

The recommended brake fluid: DOT3
2. Accurately insert a spring and the secondary piston into an opening of the main brake cylinder.
3. Accurately insert primary piston into an opening of the main brake cylinder.
4. Press primary piston and establish a lock ring in a flute of diameter of boring of the main brake cylinder.
5. Establish a stopper on a tank.
6. Grease two sealing rings (inside and outside) with brake fluid and insert them into the case of the main brake cylinder.
Prevention

Every time when replacing a tank needs to be replaced sealing rings.
7. With effort insert a tank into sealing rings of the main brake cylinder.
8. Connect the electric socket to the sensor of level of brake fluid.

Installation
PERFORMANCE ORDER
1. Install the main brake cylinder on the vacuum amplifier of brakes and screw two nuts. Tighten two nuts of fastening of the main brake cylinder.

Inhaling moment: 8–12 N • m
2. Connect two tubes of the brake system and the electric socket to the sensor of level of brake fluid.

Moment of an inhaling of tubes: 13–17 N • m
3. Fill in brake fluid and remove air from a hydraulic contour of the brake system.