Audi 80/Avant (B4)

Audi 80/Avant
The description
System of release of the fulfilled gases
Cooling system
Fuel tank and the fuel pump
The air filter and intake channels
Injection system
Transmission and transmission
Suspension bracket and steering
- Brake system
   Check of brake mechanisms
   Brake liquid
   Check of level of a brake liquid
   Check of tightness of brake system
   Replacement of a brake liquid
   Disk brake mechanisms
   Measurement of a thickness pads the disk mechanism
   The control of a condition of brake disks
   Replacement pads disk brake mechanisms
   The drum-type brake mechanism
   Measurement brake pads the drum-type mechanism
   Check of a course of a pedal of a brake
   The disk brake mechanism of back wheels
   Measurement of a thickness pads back disk brakes
   Check of a free wheeling of the lever of a lay brake
   The main brake cylinder
   The amplifier of brakes
   Check of the amplifier of brakes
   Regulator of brake forces
   Repair of a hydraulic drive of brakes
   Prorolling of brake system
   The list of malfunctions
Antiblocking system of brakes
Wheels and tyres
body electrosystem
Ignition system
Signalling devices
Devices and auxiliary devices
Heating and ventilation
Body elements
Search of malfunctions

Check of level of a brake liquid

Tank with a brake liquid (2):

1 – level marks, more low connection for a control bulb;
3 – a cover.

Constant check


  1. About too low level of a brake liquid in Audi 80 you though will be warned by the indicator on a control panel, but nevertheless it is impossible to refuse the visual control:
  2. To open a cowl and if necessary to clear a rag a receiver of a brake liquid.
  3. Level of a brake liquid should be in a transparent tank between marks min and max. In this case everything is all right.

Too low level of a liquid?

If overlays of the disk brake mechanism have already a little worn out, liquid level is most likely near the bottom mark; if they new most likely it will be above. It is absolutely normal, because the pistons of the disk brake mechanism acting at worn out overlays already a few further, leave in cylinders of supports больший volume which is filled with a brake liquid.

The critical moment comes, if level of a brake liquid in a tank falls below the minimum mark. As the brake liquid does not evaporate and is not spent, it means that in system somewhere there is not tight place. Therefore it is necessary to search urgently for the reason and a leaking place, without waiting, while the brake pedal will leave in emptiness. Simply to add liquids in a tank is a self-deception!