Audi 80/Avant (B4)

since 1991-1995 release

Repair and operation of the car



Audi 80/Avant
+ Technical specification
+ Engines
+ System of production of the fulfilled gases
+ Cooling system
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
+ System of injection
+ Coupling
+ Transmission and transmission
- Suspension bracket and steering
   Control of a condition of a casing of the steering mechanism
   Check of dustproof covers and side play of tips of cross steering drafts
   Check of dustproof covers of hinges of a forward suspension bracket
   Check of a side play of steering
   Check of a maple or poliklinovy belt
   Check of level of working liquid
   Check of a side play of the wheel bearing
   Shock-absorbers
   List of malfunctions
   Adjustment of angles of installation of wheels
   Measurement of adjustment of angles of installation of wheels
   List of malfunctions
   Repair of a running gear and steering
   Repair of a forward suspension bracket
   Repair of a back suspension bracket
   Steering
   Steering repair
   List of malfunctions
   Adjustment of the steering mechanism
   Filling with liquid and pumping of a hydraulic system of the power steering
   Safety cushion
   Requirements of safety measures
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrical system
+ System of ignition
+ Lighting
+ Signaling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ Body elements
+ Search of malfunctions
+ Specifications





Adjustment of angles of installation of wheels

For the best understanding of the separate basic concepts at adjustment of wheels these illustrations are given.

For achievement of reliable controllability of the car forward wheels have to stand under certain corners in the vertical and horizontal plane. In order that you could have a clear view the concept "ratio of angles of rotation of the operated wheels", we give an explanation of some concepts:

Convergence: at Audi 80 forward wheels at rest in front stand slightly more closely to each other, than behind. In these cases speak: the convergence is "positive". Friction between a wheel and the road wrings out the left wheel on the left, and right to the right. It is compensated by the forces arising in the forward drive, seeking to squeeze forward wheels in front. At entry of the car into turn the positive convergence passes into a negative convergence (divergence) of wheels. It occurs thanks to a trapezoid arrangement of steering drafts: the internal wheel in turn bends stronger than external. It is necessary because on turn internal wheels describe narrower circle, than external.

Disorder: so call an easy inclination in forward wheels – at Audi 80 in a wheel niche above they are located more closely to each other, than below. In language of experts it is called "negative disorder".

Cross inclination шкворня: it treats disorder. The cross inclination шкворня is an insignificant inclination of a rotary axis around which at management of a wheel and all rack turns. Both rotary axes are above located more closely to each other, than below. Disorder and a cross inclination шкворня in addition prevent trembling of wheels and facilitate their provorachivaniye.

Longitudinal inclination шкворня back: it is necessary to understand the inclined provision of a rotary axis in the longitudinal direction of the car as it. It also helps to stabilize the rectilinear movement on inertia and to prevent vibration of wheels. Besides, thanks to a longitudinal inclination there is a return of steering after turns.








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