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
18.1. A forward suspension bracket
18.2. An amortizatornaja rack
18.3. Dismantling and assemblage absorber racks
18.4. A rotary fist
18.5. The bottom forward frame
18.6. The forward stabilizer of cross-section stability
18.7. A back suspension bracket
18.8. The back shock-absorber
18.9. Shock-absorber check
18.10. The cross-section lever of a back suspension bracket
18.11. A back bottom frame
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


18.9. Shock-absorber check

The characteristic signs testifying to malfunction of the shock-absorber, are:
– Long rocking of a body at movement on a rough road covering;
– Increasing fluctuation of a body at movement on a rough road covering;
– Non-uniform and unstable movement of wheels (jumping) at movement in a certain range of speeds, including on turns;
– A deviation from the set trajectory of movement of the car at braking;
– Unstable passage of turns and car drift;
– The increased deterioration of tyres characterised by deleting of their drawing;
– Occurrence of clicks and extraneous noise at car movement. Clicks and easy blows can be caused also other malfunctions of a suspension bracket, in particular, easing of carving connections, failure of bearings of naves or deterioration of hinges of equal angular speeds of shaft of a drive.
For check of a technical condition of the shock-absorber remove it from the car.
Examine the case and a shock-absorber rod. On the case there should not be mechanical damages, on a rod – corrosion traces. Establish the shock-absorber in vertical position and check up its work, moving a shock-absorber rod for all length of a course both upwards and downwards for the length 50 – 100 mm. In all cases the shock-absorber rod should move smoothly, with notable resistance. If the rod moves jerky or is damaged, the shock-absorber is subject to replacement.
The rod газонаполненного the shock-absorber can spontaneously be put forward from the shock-absorber. Absence of spontaneous promotion of a rod from the shock-absorber, does not testify to malfunction. In this case the operating mode газонаполненного the shock-absorber corresponds to an operating mode of the hydraulic shock-absorber. The shock-absorber carries out the functions and in the absence of superfluous pressure of gas, but thus there can be an additional noise at piston moving.
Check up absence of leaks absorber liquids. It is supposed small подтекание oils at preservation of normal working capacity of the shock-absorber. If the stain of the liquid which have flowed out from the shock-absorber, extends only to the bottom support of a spring it is considered the normal phenomenon. At insignificant подтекании liquids from the shock-absorber the sealing ring of a rod of the shock-absorber that increases term of its service is greased.
In the presence of strong leaks of a liquid it is necessary to replace the shock-absorber.

The note

Fig. 12–22. A back rotary fist: 1 – a rotary fist; 2 – the tightening plug; 3 – gauge ABS; 4 – the rubber plug; 5 – the bearing; 6 – грязезащитный a casing; 7 – a bolt, 10 Н·м; 8 – a wheel nave

At installation it is necessary to use the new plug 2 (fig. 12–22), preliminary having put in an aperture of a rotary fist greasing G 000 650.

18.8. The back shock-absorber

18.10. The cross-section lever of a back suspension bracket