Audi A4

Since 1994 of release

Repair and car operation



Audi А4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ Exhaust system
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and channels всасывания
+ Injection system
+ Coupling
+ Transmission and the main transfer
+ Suspension bracket of wheels and steering
- Brakes
   Independent work on brake system
   So the brake system works
   Check of brakes
   Brake liquid
   Check of level of a brake liquid
   Check of brake system on tightness and presence of damages
   Replacement of a brake liquid
   Disk brakes
   Measurement of a thickness of overlays of forward disk brakes
   Check of a condition of brake disks
   Replacement of overlays of disk brakes
   Back disk brakes
   Measurement of overlays of back disk brakes
   Manual brake
   Check of idling of the lever of a manual brake
   The main brake cylinder
   The brake amplifier
   Check of the brake amplifier
   Works on hydraulics of brake system
   Prorolling of brake system
   The help at malfunctions
   ABS and EDS
   What does ABS?
   Function of separate knots
   Electronic system of distribution of brake effort (EBV)
   Infringements in system ABS work
   Electronic blocking of differential (EDS)
+ Wheels and tyres
+ The electrotechnical equipment
+ Ignition system
+ Illumination
+ The alarm equipment
+ Tools and devices
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics



Disk brakes

Together with everyone a wheel in a stream of air the steel disk freely rotates. So-called supports седлообразно cover disks. By pressing a pedal of a brake pistons press brake overlays to disks – there is a braking.

Disk brakes are constantly cooled by a counter stream of air. To the six-cylinder engine of 2,8 l there is an additional cooling of forward disk brakes: on perimetre of a brake disk the big dredging which reject air settle down and thus strengthen cooling.

Disk brakes in crude weather

At an incessant rain barefaced brake disks intensively pour down, therefore the brake effect is shown with delay in a fraction of a second. The moisture between brake disks and overlays should evaporate in the beginning. In the winter this phenomenon arises with special force as the layer of the salt which have settled on brake disks and overlays, at braking should be erased in the beginning.