The front wheels are equipped with a disc brake, which in models with engines with a capacity of 107 hp or more is cooled from the inside with air for better heat dissipation. Depending on the model, the rear wheels are braked by self-adjusting shoe brakes or disc brakes in models with engines with a capacity of 107 hp or more
Above the main brake cylinder in the engine compartment there is a compensation tank with brake fluid. Hydraulic clutch drive (not installed on all models) is supplied with brake fluid from the same reservoir. The pressure in both brake circuits is created by the master brake cylinder when the brake pedal is pressed.
The brake booster is driven by an air vacuum. The braking force generated by the brake pedal is increased by a vacuum if necessary, thanks to the presence of a corresponding valve. The vacuum is taken from the engine intake manifold. Diesel engines have a special vacuum pump flanged to the side of the engine, which creates a vacuum for the brake booster.
Manual braking is achieved by acting through a cable on the brake pads of the rear wheels.
VW PASSAT cars are operated with disc brake calipers manufactured by different companies: Girling, Ate or VW-II. Therefore, when replacing brake pads, different working operations are required.
Cleaning the brakes creates brake dust, which can cause health hazards. Therefore, when cleaning the brake system, care must be taken to avoid inhaling this dust.
Brake linings are subject to the operating permit - ABE (Allgemeinen Betriebserlaubnis), in addition, they are intended by the factory for the corresponding car model.
Therefore, it is recommended to use brake linings only from VW or approved for use by the federal motor transport Agency-KVA (Kraftfahrtbundesamt). Such brake linings have a corresponding KBA approval number for operation.
Work on the brake system requires extreme cleanliness and verified work techniques. If the necessary work experience is not available, then work on the brakes should be carried out in a specialized workshop. Note: On roads very wet from rain, it is necessary to brake from time to time during the trip in order to free the brake discs from deposits. Due to centrifugal forces, water is discharged from the brake discs, but a thin silicone film, rubber wear products, grease and other contaminants remain, which reduce the effectiveness of the brake.
If the car is parked after driving on a wet road, especially in winter when the streets are salted, it is advisable to brake by lightly pressing the pedal until it comes to a complete stop. This dries the brake discs and makes them less susceptible to corrosion.
Caution: If after turning the brake pedal travel is changed, it is necessary to check the lateral runout of the brake discs on the outer diameter; if necessary, the brake disc should be replaced.
Technical characteristics of the brake system
Car models up to 9/93
1) — excluding the reverse side.
Car models since 10/93
1) excluding the reverse side;
2) including version with synchronizer (all wheel drive).
Visitor comments