Audi A4

since 1994 of release

Repair and car operation

A4 Audi
- Running gear
   Protection of passengers
   Full zinc covering
   Full drive
   Drive concepts on all wheels
   Distributive torsen-differential
   Dynamics of movement on the dry road
   Maintenance instructions of quattro cars
   Mechanism of blocking of differential
   Additional works on maintenance
   Impellent compartment
+ 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
+ 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

Maintenance instructions of quattro cars

The stand for test of brakes


  1. Check of brakes on each axis can be carried out at the standard, slowly rotating stand for test of brakes (a move. 6 km/h).
  2. Thus the drive should be from the test bench.
  3. It is impossible to include transfer and differential blocking.

The stand for capacity check


  1. Capacity check at the traditional roller stand for two wheels is impossible.
  2. The roller test bench of capacity for four wheels should be used.



  1. All four wheels should pass an identical site of a way (in an ideal to have also identical depth of a profile) for 1 turn.
  2. Balancing of wheels on the car (dynamic balancing) it is possible only if all four wheels are raised.
  3. The drive should be carried out from the car engine (not from the balancing car). Important: switch off the hand brake.

Winter tires


  1. Winter tires are recommended to be used also on quattro cars. Not so much because of road performance, how many because of brake characteristics.
  2. Chains of antisliding can be used when it is offered, also on quattro cars. Here too argument are brake qualities
  3. Chains of antisliding and on quattro are put only on forward wheels.



  1. If at towage all four wheels slide on soil, it is not necessary to observe any special instructions.
  2. If one of axes cannot slide (after failure), the car needs to be shipped on the wrecker.
  3. If there is no such wrecker, Audi can be towed with the raised axis. Condition: not further, than on 50 km, and not quicker, than 50 km/h. In case of excess of this limit damages of system of transfer because of a lack of greasing are possible.