Audi 80/Avant (B4)

Since 1991-1995 of release

Repair and car operation



Audi 80/Avant
+ The description
+ Engines
+ System of release of the fulfilled gases
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and воздухозаборные channels
+ Injection system
+ Coupling
+ 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 колодок the disk mechanism
   The control of a condition of brake disks
   Replacement колодок disk brake mechanisms
   The drum-type brake mechanism
   Measurement brake колодок 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 колодок 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
+ Kuzovnaja electrosystem
+ Ignition system
+ Illumination
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ Body elements
+ Search of malfunctions
+ Specifications



The disk brake mechanism of back wheels

Except for the model capacity of 66 kw which have been not equipped ABS, 92 let out till October, on the back bridge are established disk brake mechanisms instead of the drum-type. It is a question, as well as in a case with brakes of the forward bridge, about disk brake mechanisms with floating скобой.

In addition to a hydraulic drive through a brake pedal the disk brake mechanism can be served also тросовым by a drive of system of a lay brake. The lever on which the corresponding cable is fixed, puts in action a pusher which the brake piston nestles to колодкам.

Automatic control

Designs of disk brake mechanisms in the car are always carried out by the self-regulated: with increasing deterioration brake колодок the brake piston simply leaves further a support of the disk brake mechanism, providing with that dense прилегание brake колодок to a brake disk. Owing to filling of the added volume in the cylinder a brake liquid formation люфта is impossible.

On another it occurs in a mechanical drive of lay brake system: here press the drive pusher at some instant time simply could not get the coming to light piston if there was no adjusting device. It "extends" a pusher as required. The basic part of regulation is a carving, on which depending on deterioration колодок all further forward наворачивается a pusher part. The press device thus becomes longer. Therefore at replacement колодок it is impossible to push simply back the brake piston, it turn off back on the adjusting device.