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

Disk brake mechanisms

Together with a forward wheel in a stream of air the steel disk rotates. It is covered sedlovidno by a so-called support of the disk brake mechanism. By pressing a brake pedal pistons press brake shoes to disks – there is a braking process.

For achievement of higher forces operating on a brake shoe, the Audi 80 model with the 6-cylinder engine it is equipped with two brake cylinders on a support.

The stream of air running at movement constantly cools the disk brake mechanism. Additional cooling of forward disk brake mechanisms is provided at the models equipped with engines in capacity of 85 kW and more, but also at models with the engine in capacity of 66 kW in a combination to an automatic transmission: on a disk of the brake mechanism there is big dredging which grasp air, thereby improving cooling.

The design of disk brake mechanisms of forward wheels Аudi 80 and (where they are established) back wheels has a so-called floating bracket. The support of the brake mechanism looks as the clenched fist. The brake cylinder with the piston presses an internal block to a brake disk because of what the case of the cylinder moves ahead on directing and presses a brake shoe to a brake disk on other party.

Disk brakes at damp weather

At a constant rain the located openly brake disks plentifully are moistened, and as a result of it brake influence attacks a fraction of a second later. Moisture between brake disks and brake shoes should evaporate at first. In the winter when salt is actively used, this effect is shown even more strongly because got on brake shoes and disks salt when braking at first should be erased from them.