Repair and service Audi A8 in body D2 with 1994 for 1999 of release.
1. Car operation
2. Maintenance service
3. Petrol engines of 2,8 l
4. Petrol engines of 3,7 and 4,2 l
5. Diesel engines of 2,5 l
6. Diesel engines of 3,3 l
7. Systems of ignition and injection of fuel of petrol engines
8. System of release of the fulfilled gases of cars with petrol engines
9. The power supply system of diesel engines
10. System of prestarting heating of diesel engines
11. System of release of the fulfilled gases of cars with diesel engines
12. Greasing system
13. Cooling system
14. Coupling
15. A transmission
16. Shaft of a drive of forward wheels
17. Features of a design of transmission of all-wheel drive cars
18. A suspension bracket
19. Wheels and tyres
20. A steering
21. Brake system
21.1. The general data
21.2. Antiblocking system of brakes (ABS)
21.3. Electronic system of stabilisation of course stability (ESP)
21.4. The general recommendations about operation and repair of antiblocking system of brakes and electronic system of stabilisation
21.5. Check of a rotor of gauge ABS
21.6. Replacement brake pads forward brake FN-3
21.7. Replacement brake pads forward brake HP-2
21.8. Replacement brake pads forward brake Brembo
21.9. Replacement back brake pads
21.10. Repair of forward support FN-3
21.11. Repair of forward support HP-2
21.12. Repair of forward support Brembo
21.13. Repair of a back support
21.14. A brake disk
21.15. The lever of a lay brake
21.16. Adjustment of a lay brake
21.17. Cables of a lay brake
21.18. Prorolling of a hydraulic drive of brakes
22. A body
23. Heating and air-conditioning system
24. An electric equipment
25. Electric schemes
 










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21.1. The general data

To destination and carried out funk-tsijam the brake system is divided on working, spare, lay and emergency. The working brake system with necessary efficiency provides regulation of speed of the car and its stop. The spare system serves for a car stop at failure of working brake system. The lay system serves for car deduction motionlessly on road. It basically use for deduction of the standing car, but it is possible to apply and as emergency at failure of working brake system.
On the car the working brake system with a hydraulic drive and diagonal division of contours is applied that considerably raises safety of driving of the car. At refusal of one of contours as spare brake system the second contour providing a stop of the car with sufficient efficiency is used.
In the car disk ventilated brakes on forward wheels and ventilated or with a continuous brake disk – on back are used.
The hydraulic drive of brakes is equipped by the amplifier of brakes.
The tank with the brake liquid, being in a motor compartment over the main brake cylinder, supplies brake system and coupling by a brake liquid. The vacuum amplifier of brakes reduces effort to a brake pedal, facilitating thereby driving.
The lay brake influences back wheels through тросовый a drive.

Specifications

Diameter of the main brake cylinder, mm
23,81
Diameter of the chamber of the vacuum amplifier of brakes, inches
7 or 8
Strengthening factor
4,5



Forward brakes

Support of forward brake FN–3 (15/16 ")

Brake disk:

Diameter, mm
288 or 312
Thickness, mm
25
The minimum thickness, mm
23
Diameter of the piston of a support, 57 mm
57
Thickness brake pads with the basis, mm
19
The minimum thickness brake pads with the basis, mm
7
Support of forward brake HP–2 (15/16 ")

Brake disk:

Diameter, mm
314 or 323
Thickness, mm
30
The minimum thickness, mm
28
Diameter of the piston of a support, mm
42,8
Thickness brake pads with the basis, mm
17
The minimum thickness brake pads with the basis, mm
7
Support of forward brake Brembo (17 ")

Brake disk:

Diameter, mm
345
Thickness, mm
30
The minimum thickness, mm
28
Diameter of the piston of a support, mm
40,0 or 46,0
Thickness brake pads with the basis, mm
17
The minimum thickness brake pads with the basis, mm
7

Back brakes

Support of a back brake With 38

Brake disk:

Diameter, mm
245
Thickness, mm
10
The minimum thickness, mm
8
Diameter of the piston of a support, mm
38,1 or 36,0
Thickness brake pads with the basis, mm
17
The minimum thickness brake pads with the basis, mm
7
Support of back brake C 43 (16 ")

Brake disk:

Diameter, mm
269
Thickness, mm
20
The minimum thickness, mm
18
Diameter of the piston of a support, mm
42,8 or 40,8
Thickness brake pads with the basis, mm
17
The minimum thickness brake pads with the basis, mm
7
Support of back brake C 43 (16/17 ")

Brake disk:

Diameter, mm
269 or 280
Thickness, mm
22
The minimum thickness, mm
20
Diameter of the piston of a support, mm
42,8 or 40,8
Thickness brake pads with the basis, mm
17
The minimum thickness brake pads with the basis, mm
7




21. Brake system

21.2. Antiblocking system of brakes (ABS)