Audi 80/Avant (B4)

since 1991-1995 of release

Repair and car operation

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
+ injection System
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
- Brake system
   Check of brake mechanisms
   Brake liquid
   Check of level of brake liquid
   Check of tightness of brake system
   Replacement of brake liquid
   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-type brake mechanism
   Measurement of brake shoes of the drum-type mechanism
   Check of a 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 a hydraulic drive of brakes
   Pumping of brake system
   List of malfunctions
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrosystem
+ ignition System
+ Lighting
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications

Replacement of brake liquid

Replacement of brake liquid does necessary not only already mentioned danger of formation of air vials, but also danger of emergence of corrosion in brake cylinders and pipelines because of moisture absorption. At replacement of brake liquid it is necessary to operate in the same way, as well as when pumping. You will need 2 l of new brake liquid.


  1. Whenever possible to devastate a receiver with brake liquid by means of an old medical syringe and at once again to fill it.
  2. To pump over brake liquid until from the valve of pumping there will be no fresh liquid.
  3. For this purpose to pump over via each valve 500 of cm3 of brake liquid. In this case each drop will appear 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 liquid by no means cannot neither be poured out in the sewerage, nor to add to the fulfilled oil. The best – to hand over it in separate capacity on utilization of a special waste (you can learn location of the next similar institution in a local justice).