Vehicle braking system Audi 80 B2

Design and technical characteristics
The service brake system is hydraulically driven and consists of two independent braking circuits for the front and rear wheels, divided diagonally (left front...

Technical characteristics of the front wheel brake mechanisms
Front wheel brakes of ATE or Girling brand with solid or ventilated tyres (since 1985 model year) discs, with floating calipers, single-piston. Nominal disc...

Technical characteristics of the rear wheel brake mechanisms
The rear wheel brakes are drum-type, with automatic adjustment of the gaps between the pads and the drum. Rear wheel brake characteristics *Since model year...

Technical characteristics of the brake drive
Master brake cylinder Master brake cylinder with two coaxial pistons. Brand: ATE or FAG. Diameter of the main brake cylinder, mm: 20.64. Piston stroke, mm:...

Technical characteristics of the parking brake system
Parking brake system with manual mechanical cable drive, acts on the rear brake shoes. Free travel of the parking brake drive lever is one or two sector teeth.

Tightening torques of main threaded connections, kgf.m
Brake mounting bolt to steering knuckle: 7.0*. Girling brake caliper mounting bolt: 3.5. Protective cover mounting bolt: 1.0. Brake shield mounting bolt to...

Replacing the front brake pads of the ATE brand
Note. Before removing the brake pads, if they are not to be replaced, carefully mark their positions so that they can be installed in their original position....

Disassembly and assembly of the front wheel brake mechanism of the ATE brand
Note. Before removing the brake pads, if they are not to be replaced, carefully mark their positions so that they can be installed in their original position....

Replacing the front brake pads of the Girling brand
Raise the front of the vehicle, place it on stands and remove the wheels. Remove some of the brake fluid from the reservoir using a syringe. Manually move the...

Removal and installation the front brake disc of the Girling brand
Raise the front of the car and remove the wheel. On vehicles with ATE brand brake mechanisms, unscrew the bolts securing the caliper to the steering knuckle,...

Replacing rear brake pads
Note: When the friction lining of one of the linings wears down to the minimum permissible thickness, both pairs of brake shoes must be replaced...

Removal and installation the rear brake wheel cylinder
Remove the brake pads as described above. Disconnect the brake hose from the wheel cylinder bleed nipple. After unscrewing the wheel cylinder mounting bolts,...

Adjusting the parking brake
Adjustment of the parking brake is only necessary when replacing the cable or the handbrake drive rod, since the rear brakes have a device for automatic...

Removal and installation the master brake cylinder
Removal Remove the brake fluid from the master cylinder reservoir using a syringe. Disconnect the lines from the master cylinder. Loosen the nuts securing the...

Removal and installation the brake booster
Removing and installing the brake booster is not difficult. When installing, consider the following: tighten the bolts and nuts to the required torque; replace...

Checking the brake booster
Press the brake pedal all the way down several times with the engine off to create a pressure in the vacuum booster cavities close to atmospheric pressure....

Checking and adjusting the brake drive pressure regulator
Checking functionality With the vehicle parked on its wheels, quickly press the brake pedal all the way down and release it. The regulator drive lever should...

Checking the tightness of the pressure regulator
Connect the control pressure gauges as when adjusting the pressure regulator. Remove air from the hoses of both pressure gauges through the pressure gauge...

Bleeding the brake hydraulic system
Bleeding the brakes is necessary to remove air from the hydraulic drive. Air can enter the hydraulic drive due to depressurization of the system during repair...

Bleeding the brake hydraulic system using a special installation
Note: When bleeding the rear wheel brakes, vigorously move the pressure regulator lever towards the spring. Bleed air from the hydraulic brake system under...

Bleeding the brake hydraulic system without special installation
When bleeding the brake system, monitor the presence of fluid in the reservoir, preventing its bottom from being exposed. Before you start bleeding, eliminate...

This section is available on russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian

Share information:

80(B4, 1991-1996)

80(B3, 1986-1991)

80(B3, 1986-1991, petrol)

80(B2, 1979-1986)