Attention! When servicing any of the components of the brake system, you should proceed with extreme care, methodically following all the procedures described in this manual in the proper order. When working on hydraulic circuit components, special attention must be paid to cleanliness. If you are not sure about the correctness of the assessment of the condition of the components, do not hesitate to replace them (included for this vehicle axle). As replacement parts, use only branded parts manufactured by Skoda, or not inferior to them in quality.
All models are equipped with a 2-circuit hydraulic brake system with vacuum boost. Master brake cylinder (GTZ) has a double structure. The hydraulic circuits operate independently, i.e. in the event of failure of one of them, the second continues to provide adequate braking of the car with two wheels. Under normal conditions, both brake circuits function in unison. Anti-lock brake system (ABS) Standard on some models, optional on others (see Section Removal and installation of components of ABS systems).
The brake mechanisms of the front wheels on all models have a disc design. The rear wheels are equipped with drum brakes. The disc brake calipers feature a single-piston floating caliper design that distributes force evenly between the two brake pads. The front and rear shoes are placed in the drums of the brake mechanisms of the rear wheels, driven by a 2-piston wheel cylinder. A special adjustment mechanism automatically compensates for the wear of the friction linings by adjusting the position of the shoes.
On models not equipped with ABS, a pressure control valve is included in the hydraulic circuit of the rear brakes. The valve can respond to changes in both the pressure in the circuit and the degree of loading of the car, and in the first case two valves are used (one for each of their wheels), screwed directly into the GTZ, and in the second - one fixed to the car body and connected to the rear axle by a spring. Presence of a control valve (ov) allows the system to timely adjust the pressure in the hydraulic circuits of the brake mechanisms of the rear wheels, thereby preventing premature blocking of the latter during heavy braking.
The parking brake has an independent mechanical drive and acts on the rear wheels of the car.