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
17.1. The general data
17.2. A kardannyj shaft
17.3. Position adjustment карданного a shaft
17.4. The main reverse gear
17.5. Back shaft of a drive
17.6. Differential of the main reverse gear
18. A suspension bracket
19. Wheels and tyres
20. A steering
21. Brake system
22. A body
23. Heating and air-conditioning system
24. An electric equipment
25. Electric schemes
 










17-1-obshhie-svedeniya.html

17.1. The general data

For a drive of back wheels on the car in addition distributing box, propeller a shaft, the main reverse gear and back shaft of a drive is established. For alignment of speed of rotation of forward and back wheels the interaxal differential which distributes a twisting moment between forward and back axes of the car is used. At proslipping of wheels of one of axes of the car the twisting moment transferred to other axis, automatically increases. Coupling of wheels of the car with a road covering thus improves. Eсли coupling of wheels with a road covering decreases, the twisting moment transferred to this axis therefore stability of the car to lateral drifts increases decreases also. Irrespective of it the interaxal differential supposes rotation of wheels with various speed that is necessary for normal work of antiblocking system of brakes.
The twisting moment from a transmission and the main transfer is transferred to wheels through four shaft of a drive. Each of shaft is inserted into a nave of a wheel and fixed by a nut.
The kardannyj shaft connects a transmission to the main reverse gear.
As propeller the shaft is the balanced knot, sticking to it of a dirt is inadmissible. At a raising of the car for maintenance service it is expedient to clear propeller a shaft and to check up its technical condition. Every time when propeller the shaft acts in film, for prevention of infringement of its balancing it is necessary to establish in the same position.
Malfunction signs карданного a shaft usually are noise or vibration at car movement.

The inhaling moments, Н·м

Kardannyj shaft to a transmission
55
Kardannyj shaft to the main reverse gear
55
Suspension bracket of the central part карданного a shaft to a body
23
Thermofilter карданного a shaft to a transmission
23
Cross-section beam to a body
25
The tunnel карданного a shaft to a body
25
Back cross-section beam to the main transfer
55
Back shaft of a drive to the main transfer:

Bolt M8
40
Bolt M10
77
Clamp of a cable of a lay brake
25



17. Features of a design of transmission of all-wheel drive cars

17.2. A kardannyj shaft