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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4-2-2-negermetichnost-amortizatorov.html

4.2.2. Leakage of shock-absorbers

Shock-absorbers often are rejected and change because of their leakage. The researches conducted at the stand and on cars showed that often replacement of allegedly rejected shock-absorbers was unreasonable.
Small leak of oil ("sweating") on consolidation of a rod is not the reason for replacement of the shock-absorber. The shock-absorber with traces of oil is considered normal under following conditions.

Fig. 4.36. Site of leak of oil


Oil leak (on rice 4.36. it is darkened) it is visible, but traces look dim, opaque or dried up by dust
Traces of the flowed-out oil from the damper lock (consolidation of a rod) to (max.) plate of a spring

NOTE
Small leak of oil is advantage as consolidation of a rod thereby is greased, and the term of its service increases. It belongs to shock-absorbers of forward and back suspension brackets.


4.2.1. Running gear

4.2.3. Noise in shock-absorbers