Audi 80/Avant (B4)

since 1991-1995 release

Repair and operation of the car

Audi 80/Avant
+ Technical specification
+ Engines
+ System of production of the fulfilled gases
+ Cooling system
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
+ System of injection
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
- Brake system
   Check of brake mechanisms
   Brake fluid
   Check of level of brake fluid
   Check of tightness of brake system
   Replacement of brake fluid
   Disk brake mechanisms
   Measurement of thickness of blocks of the disk mechanism
   Control of a condition of brake disks
   Replacement of blocks of disk brake mechanisms
   Drum brake mechanism
   Measurement of brake shoes of the drum mechanism
   Check of the course of a pedal of a brake
   Disk brake mechanism of back wheels
   Measurement of thickness of blocks of back disk brakes
   Check of a free wheeling of the lever of the parking brake
   Main brake cylinder
   Amplifier of brakes
   Check of the amplifier of brakes
   Regulator of brake forces
   Repair of the hydraulic drive of brakes
   Pumping of brake system
   List of malfunctions
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrical system
+ System of ignition
+ Lighting
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications

Replacement of brake fluid

Does replacement of brake fluid necessary not only already mentioned danger of formation of air bubbles, but also danger of emergence of corrosion in brake cylinders and pipelines because of moisture absorption. When replacing brake fluid it is necessary to work in the same way, as well as when pumping. You will need 2 l of new brake fluid.


  1. Whenever possible to devastate a receiver with brake fluid by means of an old medical syringe and at once again to fill it.
  2. To pump over brake fluid until from the valve of pumping there is no fresh liquid.
  3. For this purpose to pump over via each valve 500 of cm3 of brake fluid. In this case each drop will be guaranteed replaced.
  4. Sequence of replacement: behind on the right, behind at the left, in front on the right, in front at the left.

 Help: the used brake fluid cannot neither be poured out in the sewerage by no means, nor to add to the fulfilled oil. The best – to hand over it in separate capacity on utilization of special waste (you can learn location of the next similar institution in a local justice).