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
14.1. The general data
14.2. The main cylinder of coupling
14.3. Removal of air from a hydraulic drive of coupling
14.4. The mechanism of deenergizing of coupling
14.5. A conducted disk of 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
22. A body
23. Heating and air-conditioning system
24. An electric equipment
25. Electric schemes


14.1. The general data

Coupling is located between the engine and a transmission and intended for short-term separation and smooth connection of a cranked shaft of the engine and a primary shaft of a transmission during the moment трогания the car from a place and during a gear change without noise and risk of damage of details.
On all models dry one-disk coupling which consists of conducted and press disks of coupling, central диафрагменной springs, a casing and the bearing of deenergizing of coupling is established.
The conducted disk of coupling freely moves on шлицах a primary shaft of a transmission and is clamped between a flywheel and a press disk effort which is created central диафрагменная by a spring. From two parties of a conducted disk приклепаны frictional overlays. The conducted disk of coupling incorporates to a nave through details гасителя крутильных fluctuations. Necessity гасителя крутильных fluctuations is caused by the following.
At sharp change of speed of movement of the car, arrival on roughness of road, sharp inclusion of coupling, and also owing to non-uniform work of the engine in car transmission there are the dynamic loadings causing a twisting (раскручивание) of shaft of transmission. Non-uniformity of a twisting moment of the engine can cause considerable overloads in transmission owing to occurrence крутильных fluctuations and a resonance at coincidence of frequencies of transferred loadings to frequencies of own fluctuations of transmission. Elastic fluctuations of transmission result not only in noise occurrence in mechanisms and units, but also to dangerous vibrations, and sometimes and to breakages of details when the amplitude of fluctuations reaches the big size. Energy крутильных fluctuations absorbs гаситель.
Drive of deenergizing of coupling the hydraulic. The bearing of deenergizing of coupling is established from the forward party of a transmission on муфте coupling deenergizings. The bearing will mix up a plug of deenergizing of coupling. By pressing a coupling pedal the piston in the main cylinder moves and compresses a liquid which on a hose arrives in the working cylinder of coupling. Under pressure the piston of the working cylinder of coupling, moving, puts in action a plug of deenergizing of coupling. The plug of deenergizing of coupling moves the bearing which influences a spring of a press disk and takes away press a disk from a conducted disk of coupling. Coupling is regulated automatically.

14. Coupling

14.2. The main cylinder of coupling