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

Measurement of a thickness pads the disk mechanism

Brake pads the disk mechanisms, having enough big size for forward wheels, maintain to 50 000 km. Despite it, it is not necessary to forget about regular visual check:


  1. The minimum thickness pads should make 2 mm without a bearing plate. Actually bearing plate – that is a metal piece on which the overlay is pasted – has a thickness about 5 mm.
  2. At performance of the fluent control it is enough to light at the removed cap a lamp through an aperture in a wheel and to estimate a thickness of an overlay.
  3. More exact control is spent at the removed wheel: to put a ruler to колодке and to measure, as is shown in the top illustration. Do not forget to examine a frictional overlay on an inside!

Measurement of a thickness pads the brake mechanism of forward wheels:

1 – an overlay material;
2 – a metal bearing plate.