Rear wheel brake: 1 - lower coupling spring of the shoes; 2 - brake shoe; 3 - clamping spring pads; 4 - spacer bar; 5 - upper coupling spring; 6 - working brake cylinder; 7 - shield of the brake mechanism; 8 - axial pin of the spacer lever; 9 - spacer lever; 10 - brake shoe (complete with spreader arm); 11 - tip of the parking brake cable.
Rear brake drum type. When the brake pedal is pressed, fluid from the master brake cylinder flows into the working brake cylinders. Under the pressure of the brake fluid, the pistons of the working brake cylinders come out of them and press the brake pads against the working surface of the brake drum. After the brake pedal is released, under the influence of the coupling springs, the brake shoes sink the pistons into the cylinder and move away from the brake drum. In the rear working brake cylinders, a device for automatically adjusting the gap between the brake shoes and the drum is installed, which limits the sinking of the pistons into the cylinder. Due to this, an optimal clearance between the shoes and the drum is maintained.
Rear brakes (except for the working cylinder) are also part of the parking brake system.