Service of Audi A4 from 2001 to 2005 release.
1. Operation and maintenance of the car
2. Engine
3. Transmission
4. Running gear
4.1. Wheels and tires
4.2. General information about a running gear of the car
4.2.1. Running gear
4.2.2. Leakage of shock-absorbers
4.2.3. Noise in shock-absorbers
4.2.4. Check of the removed shock-absorber
4.2.5. Check of shock-absorbers at the damping stand
4.2.6. Dynamic-Ride-Control system (DRC II)
4.2.7. Forward depreciation rack
4.2.8. Check of pressure in the DRC II system
4.3. Repair of a suspension bracket of forward wheels
4.4. Back suspension bracket
4.5. Tables
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
9. Schemes of electric equipment
 




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4.2.3. Noise in shock-absorbers

Shock-absorbers often are rejected and change because of foreign knocks. The researches conducted at the stand and on cars showed that apprx. 70% of allegedly rejected shock-absorbers were not rejected, and replacement was unreasonable.
In case of malfunctions, interpreted as foreign knocks or clicks, act as follows.
During a trial trip – whenever possible, on the dry uneven road – with find out where when and as noise prove.

NOTE
In the most exceptional cases the shock-absorber is the reason of noise.


4.2.2. Leakage of shock-absorbers

4.2.4. Check of the removed shock-absorber