Audi A4

since 1994 of release

Repair and car operation

A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ exhaust System
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and absorption channels
+ injection System
+ Coupling
+ Transmission and main transfer
- Suspension bracket of wheels and steering
   Running gear
   Check of cuffs of the steering mechanism
   Check of dustproof caps and gap in heads of cross-section steering draft
   Check of dustproof caps of hinges of an axis
   Check люфта steering wheel
   Check of a maple belt
   Check of level of oil
   Check of a gap of the wheel bearing
   Check of shock-absorbers
   The help at malfunctions
   Adjustment of wheels
   Measurement of adjustment of wheels
   The help at malfunctions
   Independent works on a running gear and a steering
   Dismantling of a suspension bracket of forward wheels
   Works with the back bridge
   Shock-absorber replacement behind
   Works on a steering
   Check of tightness of a servoupravleniye
   Poliklinova belt
   The help at malfunctions
   Adjustment of the steering mechanism
   Dismantle of the pump of a servoupravleniye
   Filling and pumping of system of a servoupravleniye
   Safety cushion
   Safety instructions
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ ignition System
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics

Adjustment of wheels

In order that you could imagine better the concepts connected with adjustment of wheels, we represented it in drawing. At the left the convergence, in the middle negative disorder is explained, and on the right you see the image of a longitudinal inclination шкворня.


Forward wheels to provide reliable behavior of the car, should settle down under a certain corner in the lateral and longitudinal direction. In order that you got some idea about concept «steering geometry», the explanation of concepts here is provided:

Width of a track: in Audi A4 forward wheels are at rest reduced a little more than the back. Thus say that "positive" or the car has a width of a track «a convergence of wheels». The friction between a wheel and the road wrings out the left wheel to the left, and right to the right. It is somewhat leveled by forces of a forward drive which aspire to pull together forward wheels. At car turn the convergence of forward wheels passes to "divergence". It becomes at the expense of a trapezoid arrangement of steering drafts: the internal wheel in relation to turn is developed more strongly, than external. It is also necessary, as on turn internal wheels describe a smaller circle, than external.

Disorder: the easy inclination of forward wheels to outer side – above in a wheel niche of Audi A4 between them smaller distance, than below at the earth so is called. In language of professionals it is called as "negative" disorder.

Cross-section inclination: it concerns disorder. The cross-section inclination represents an insignificant inclination of an axis round which by car at management wheels together with a suspension bracket turn. Both cross-section axes have above smaller distance, than below.

Longitudinal inclination: as it understand an inclined arrangement of rotary axes in the longitudinal direction of the car. It also promotes stabilization of rectilinear movement and does not allow fluctuation of forward wheels.