Attention! When servicing any of the brake system components, you must act extremely carefully, methodically performing all the procedures described in this Manual in the proper order. When working with hydraulic tract components, special attention must be paid to maintaining cleanliness. If you are not sure that the condition of the components is correct, do not hesitate to replace them (included in the kit for this vehicle axle). As replacement parts, use only original Skoda parts or parts of equal quality.
All models are equipped with a dual-circuit hydraulic brake system with vacuum booster. The main brake cylinder (MBC) has a dual design. The hydraulic system circuits operate independently, i.e. if one of them fails, the second continues to provide adequate braking of the car with two wheels. Under normal conditions, both brake circuits operate in unison. The anti-lock braking system (ABS) is standard on some models, and can be installed additionally on others (for more details, see Section Removal and installation of ABS system components).
The front wheel brakes on all models have a disc design. The rear wheels are equipped with drum brakes. The disc brake calipers have a single-piston design with a floating bracket, which ensures uniform force distribution between the two brake shoes. The drums of the rear wheel brakes contain front and rear shoes, which are driven by a 2-piston wheel cylinder. A special adjustment mechanism automatically compensates for wear of the friction linings by adjusting the position of the shoes.
On models not equipped with ABS, a pressure regulator valve is included in the hydraulic circuit of the rear brake mechanisms. The valve can respond to changes in both the pressure in the circuit and the degree of vehicle loading, with two valves used in the former case (one for each of their wheels), screwed directly into the brake master cylinder, and in the second - one, fixed to the car body and connected to the rear axle by a spring. The presence of a regulator valve allows the system to promptly adjust the pressure in the hydraulic circuits of the brake mechanisms of the rear wheels, thereby preventing premature blocking of the latter during sharp braking.
The parking brake has an independent mechanical drive and acts on the rear wheels of the vehicle.