All brake mechanisms are equipped with self-adjusters. In this case, the wear compensation of the brake pads of the mechanisms is carried out automatically.
The hydraulic system consists of two independent circuits, front and rear. In case of failure of one of the circuits, the second continues to function, providing the car with adequate braking. A special warning lamp mounted in the instrument panel warns the driver about a malfunction in the functioning of the brake system, as well as an excessive drop in the brake fluid level.
Master brake cylinder (GTZ)
The GTZ is mounted on the brake booster servo assembly mounted on the rear bulkhead of the engine compartment. On top of the cylinder is a large hydraulic fluid reservoir equipped with a plastic cap.
The GTZ has a dual design, providing the operation of two independent hydraulic circuits. The fluid pressure in each of the circuits is pumped by an individual piston inside the master cylinder.
Vacuum brake booster
The booster uses the vacuum created in the intake piping to improve the efficiency of the hydraulic brake system. The vacuum booster servo is mounted on the rear bulkhead of the engine compartment inside the latter.
Anti-lock brake system (ABS)
ABS prevents premature blocking of the car's wheels during heavy braking (see Section Anti-lock brake system (ABS) - general information and fault codes).
Parking brake
The cable drive of the parking brake is connected to the brake mechanisms of the rear wheels of the car. Drive cables are connected to the actuating levers of the brake shoe assemblies.
Service
Upon completion of any of the maintenance procedures associated with the removal or disassembly of any of the components of the brake system, it is imperative to check the effectiveness of the brake system, and only after making sure that it is in full working order, start operating the vehicle. Road trials should be carried out on a clean, dry and level road surface.
Test the braking performance of the vehicle at different speeds and different pedal pressures. The car must brake evenly, while maintaining directional stability. Try to prevent premature wheel lockup, which could lead to loss of control.
Keep in mind that factors that affect a vehicle's braking performance include the condition and inflation pressure of the tires, the vehicle's load level, and the correct suspension geometry.
Precautionary measures
Some special precautions should be observed when servicing vehicle brake system components:
- Use only DOT 3 grade hydraulic fluid to fill the brake system;
- Brake linings may contain hazardous asbestos. Try not to inhale brake dust, do not blow it off with compressed air. To wipe the components of the brake mechanisms, use only special cleaning compounds;
- Ensure that all required tolerances and tightening torques of fasteners are observed. When servicing components, use only serviceable tools. At the slightest doubt, seek help from specialists. Remember that the proper functioning of the brakes is the key to traffic safety;
- At the slightest sign of a malfunction in the functioning of the brake system, the operation of the car should be suspended!