Audi A4

since 1994 of release

Repair and car operation

A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ exhaust System
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and absorption channels
+ injection System
+ Coupling
+ Transmission and 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 brake liquid
   Check of brake system on tightness and existence of damages
   Replacement of brake liquid
   Disk brakes
   Measurement of 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
   Hand brake
   Check of idling of the lever of the hand brake
   Main brake cylinder
   Brake amplifier
   Check of the brake amplifier
   Works on hydraulics of brake system
   Pumping 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)
   Violations in ABS system work
   Electronic blocking of differential (EDS)
+ Wheels and tires
+ Electrotechnical equipment
+ ignition System
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics

Works on hydraulics of brake system


    Brake liquid is poisonous. Therefore touch it with a mouth or open wounds. Brake liquid corrodes an automobile varnish. Therefore do not put on varnishing the rags impregnated with brake liquid, or the tools soiled in it. When weakening a brake hose or a brake tube brake liquid gradually follows from a broad tank. Do not allow it as follows: before weakening of screw connection in the corresponding brake contour weaken the pumping screw. Put on a hose of pumping and lower it in capacity. Completely wring out a pedal of a brake and fix it in this situation with the help of a wooden plate. It will close openings of supply of liquid in the main thing brake the cylinder and brake liquid will not pour out any more. For unscrewing and a tightening of brake tubes you should buy the shown key for brake tubes For an extraction in an opposite direction of brake hoses the rozhkovy key is necessary to you. After the works which have been carried out in hydraulics of brake system, it is necessary to pump over it always. Often happens sufficient to pump over only that brake contour on which work was carried out.

Dismantle of brake tubes


    Unscrew a cap nut of a brake tube. Reliably hold opposite connection, for example, on the end of a brake hose. If the nut on a tube rusted and does not rotate, in any case the tube needs to be changed. Thin-walled tubes quickly break off. For unscrewing of connecting knots of tubes the following council can help in case in any case it is necessary to replace this piece of a tube: Saw off a brake tube near screw connection, unscrew a cap nut a nutlet type key with a shestigrannik. Lay brake tubes in the rasporny arms intended for them.

Dismantle of brake hoses


    In the beginning unscrew a cap nut of the corresponding brake hose. Thus watch that the hose was not overwound. If the brake hose is attached to a body by a metal arm, then it is fixed by a metal collar in order to avoid shifts. At assembly do not forget about this so-called arm of a hose. At installation always in the beginning screw a hose in that place where it has an external carving. Then tighten other screw connection. The brake hose should not be overwound. As control the color strip or the rubber roller along a hose serves. Pump over brake system. Right after repair check, whether the hose will rub somewhere at amortization movements. Repeat this check after a long trip.