Master brake cylinder and vacuum booster: 1 - master brake cylinder; 2 - master cylinder reservoir; 3 - cork; 4 - sealing rings; 5 - brake fluid emergency level sensor; 6 - piston of the drive circuit "right front - left rear brakes"; 7 - piston of the drive circuit "left front - right rear brakes"; 8 - support ring; 9 - spring; 10 - retaining ring; 11 - amplifier body; 12 - piston rod; 13 - spring; 14 - piston; 15 - valve body; 16 - diaphragm; 17 - valve stem; 18 - lid; 19 - protective cover.