Brake system of car Volkswagen Passat B4

Features of the brake system
The service brake system with hydraulic drive, consisting of two independent circuits, divided diagonally (left front - right rear, right front - left rear). The hydraulic brake...

Brake drive
Master brake cylinder with two coaxial pistons of Fag or Girling brand. The diameter of the main brake cylinder on cars with engines "EZ", "RA", "SB" and "1Y" 20.64 mm; on other...

Anti-lock braking system
The Teves electronically controlled anti-lock braking system consists of a hydraulic unit, wheel speed sensors and an electronic control unit. The hydraulic brake drive includes a...

The principle of operation of the braking system
Brakes operate most effectively when there is maximum friction between the tires and the road surface. When braking, the tire begins to slip on the road surface and the peripheral...

Operation of the braking system
As soon as the wheel slows down or starts to slip, which indicates the beginning of its locking, the isolating electromagnetic valve of this brake circuit, according to the...

Checking the electrical circuits of the brake system
The basic electrical circuit diagram of the Teves ABS is shown in Fig. 7-8. Fig. 7-8. Schematic diagram of the Teves ABS Pr. - fuse; M is the ground connection point, the numbers...

Precautions for vehicles with ABS
When removing the battery for electric welding, it is necessary to disconnect the plug connector from the electronic control unit with the ignition off. When carrying out painting...

Removal and installation of the electronic control unit with the hydraulic unit
The unit is installed in the engine compartment on the left. The electronic unit is attached to the hydraulic unit with bolts. Warning: When removing the unit, do not twist the...

Removal and installation front wheel speed sensors
Warning: Do not press the brake pedal while performing the operation to avoid subjecting the rear wheel circuit to excessive pressure. To remove, lift the front of the car and...

Bleeding the brake hydraulic system
Bleeding of the brake hydraulic drive should be performed in all cases when during the performance of any work the hydraulic drive becomes leaky. The brake hydraulic drive should...

Front wheel brakes
Brake pads should only be replaced in pairs on both wheels at the same time using pads of the specified brands. GIRLING brand brake mechanisms To replace the brake pads (Fig....

Replacing the front brake pads on cars manufactured since July 1995 with an AVE engine
Note: Before removing brake pads that are to be used again, mark them for installation in their original locations, as reinstalling them will cause the brake mechanism to...

Removal and installation the front wheel brake mechanism
Raise the front of the car, place it on stands and remove the front wheels Remove the brake fluid from the hydraulic reservoir using a syringe. Disconnect the hose from the wheel...

Disassembly and assembly of the front wheel brake mechanism
Remove the brake mechanism as described above. Clamp the brake mechanism in a vice with soft pads (Fig. 7-12). Remove the piston dust cap. Remove the piston from the cylinder by...

Removal and installation the front brake disc
Replace brake discs in pairs only. Fig. 7-13 shows the layout of the front axle with ventilated discs of the front wheel brake mechanisms. Raise the front of the vehicle, place it...

Rear wheel drum brakes
Replacing brake pads Brake pads should only be replaced in pairs on both wheels at the same time using pads of the specified brand. For removal (fig. 7-14 and 7-15) raise the rear...

Rear wheel disc brakes
Replacing brake pads Brake pads should only be replaced in pairs on both wheels at the same time using pads of the specified brand. Raise the rear of the vehicle, place it on...

Brake drive
Removal and installation the master brake cylinder To remove, disconnect the brake fluid level sensor connector. Remove the master cylinder reservoir cap (Fig. 7-17). Remove the...

Parking brake system
Adjusting the parking brake on the rear wheel drum brakes (fig. 7-19, 7-20) it is only necessary when replacing the parking brake cable, brake drums and brake shoes, since the...

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