Audi A4 with 2001- 2005 of release.
1. Operation and car maintenance service
2. The engine
3. Transmission
4. A running gear
5. The steering mechanism
6. Brake system
6.1. Preliminary checks
6.1.1. Brake disks
6.1.2. Check of brake system
6.1.3. Replacement of a brake liquid
6.1.4. Visual check of brake system on presence негерметичности and damages
6.1.5. Check of a thickness of brake overlays
6.1.6. Check at high and at low pressure
6.1.7. Check of residual pressure
6.1.8. Troubleshooting at unilateral deterioration brake pads
6.1.9. Check of the main brake cylinder
6.1.10. Prorolling of brake system
6.1.11. Process of removal of air for cars with electronic system of maintenance of course stability (ESP)
6.2. Repair of brake system
6.3. Repair of brakes of forward wheels
6.4. System ABS
6.5. Tables
7. An onboard electric equipment
8. A body
9. Electric equipment schemes
 







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6.1.3. Replacement of a brake liquid

THE NOTE
Apply only a new original brake liquid of concern VW/Audi.

ATTENTION
Do not suppose contact of a brake liquid to liquids which structure includes mineral oil (engine oil, gasoline, washing-up liquids). Mineral oils destroy consolidations and cuffs of brake system.
The brake liquid is poisonous. In connection with corroding action do not suppose its contact to a paint and varnish covering of the car.
The brake liquid гигроскопична also absorbs a moisture from air and should be stored constantly in densely closed containers without air access.
The spilt brake liquid is necessary for washing off a water considerable quantity.


Fig. 6.3. A cover of a tank with a brake liquid


Unscrew a cover of 1 tank with a brake liquid (fig. 6.3).

ATTENTION
Do not delete a grid from a tank with a brake liquid.

Unscrew a stopper of a tank with a brake liquid.

Fig. 6.4. Device connection to a branch pipe of a tank with a brake liquid


Drain hose of the device connect to a branch pipe of 1 tank with a brake liquid (fig. 6.4).
Through a drain hose of the device pump out as much as possible a brake liquid.
Disconnect a drain hose.
Screw up a stopper of a tank with a brake liquid.

ATTENTION
The pumped out (used) brake liquid repeatedly do not use.

Connect the adapter 1 to a tank with a brake liquid.

Fig. 6.5. Connection of the adapter and a jellied hose to a tank with a brake liquid


Connect a jellied hose 2 devices or to the adapter (fig. 6.5).

Cars with a mechanical transmission
Remove a protective cap with прокачного the union of the working cylinder of coupling.

Fig. 6.6. Connection of capacity for plum of a brake liquid


Hose of 1 capacity for plum of a brake liquid put on on прокачной the union of the working cylinder of coupling, open прокачной the union and wait until will flow out apprx. 100 ml of a liquid (fig. 6.6).
Close прокачной the union and put on a protective cap.
Then some times press a coupling pedal.

Continuation for all cars
Remove protective caps with прокачных unions.
Hose of 1 capacity for plum of a brake liquid put on on forward left прокачной the union, open the union and wait until will flow out about 200 ml of a liquid. Close прокачной the union.
Repeat process on other party of a forward part of the car.
Hose of 1 capacity for plum of a brake liquid put on on back left прокачной the union, open the union and wait until will flow out about 200 ml of a liquid. Close прокачной the union.
Repeat process on other party of a back part of the car.

Volumes of a brake liquid
In front at the left: 200 ml.
In front on the right: 200 ml.
Behind at the left: 200 ml.
Behind on the right: 200 ml.
The general объем*: 1000 ml.
* Including the volume which has been pumped out from a tank with a brake liquid and the replaced volume of a liquid in the hydraulic amplifier of coupling.

Put on protective caps on прокачные unions of brake supports.
For pouring of a brake liquid the device lever establish in position In (the operation manual see).
Disconnect a jellied hose from the adapter.
Unscrew the adapter from a tank with a brake liquid.

Fig. 6.7. Levels of a brake liquid in a tank


Check up level of a brake liquid, if necessary modify (fig. 6.7).
Screw up a cover of a tank with a brake liquid.
Check up pressure upon a pedal of a brake and its free wheeling. A free wheeling макс. 1/3 courses of a pedal


6.1.2. Check of brake system

6.1.4. Visual check of brake system on presence негерметичности and damages