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

The drum-type brake mechanism

On the front-wheel models Audi 80 which have been let out till October of 92 (not equipped АБС), on the back bridge there are drum-type brake mechanisms. On this version of the brake mechanism two brake pads nestle on an internal surface of a drum the piston of the brake cylinder (it is located between the top ends brake pads). Thanks to an arrangement brake pads in applied in Audi 80 drum-type brake mechanism (brake mechanism Simplex – one brake cylinder with two pistons) one of two brake pads operates in the self-amplifying image. It means that this brake колодка because of wheel rotation nestles on a brake drum in certain limits spontaneously that reduces effort to pedals. In Audi 80 (at advance) operates spontaneously forward brake колодка. On a slang of experts it is called as primary pads or active brake pads. Back is called according to secondary pads or as passive brake pads.

The self-regulated drum-type brake mechanism

Drum-type brake mechanisms should not be regulated. This problem has incurred, in отличае from disk brake mechanisms, the adjusting mechanics. With increasing deterioration of a frictional covering rods of cylinders between brake колодками are put forward, that pads again could nestle on a drum. It is provided with a wedge with a spring drive which in process of deterioration pads puts forward rods.