Audi 80/Avant (B4)

since 1991-1995 of release

Repair and car operation

Audi 80/Avant
- Technical specification
   15-inch wheels
   Brake system
   Passive safety
   Full drive
   Distributive Torsen-differential
   Dynamics of movement at a dry paving
   Instructions on operation for all-wheel drive cars
   Blocking of differential of the back bridge
   Motor compartment
   Regular servicing
   Workplace organization
   Lubricant works
   Consumption of oil
   Right choice of engine oil
   Replacement of engine oil and oil filter
   Check of level of working liquid of the amplifier of a wheel
   Check of level of oil of a mechanical transmission
   Check of level of oil in a drive of the back bridge
   Control of level of ATF in an automatic transmission
   Check of level of oil in the main transfer of an automatic transmission
   ATF replacement
   Greasing of hummock drives, hinges and locks
+ Engines
+ System of production of the fulfilled gases
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
+ injection System
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrosystem
+ ignition System
+ Lighting
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications

Instructions on operation for all-wheel drive cars

The general

  • If the forward bridge or one of forward wheels is raised, the drive is absent.
  • If the back bridge is raised, the drive is absent.
  • If one of back wheels is raised, the drive is absent, in that case if the differential of the back bridge is not blocked.
  • If the driveshaft is separated from a transmission, the drive is absent.

Check of brakes


  1. Check of action of brakes can occur poosno at the normal test bench for check of brakes on low speed (max of 6 km/h).
  2. Thus the drive should proceed from the test bench.
  3. Transfers or differential blocking should not be included.

Capacity check


  1. Check of capacity cannot be made at the ordinary test bench by determination of capacity for two driving wheels.
  2. It is necessary to use the test bench for four wheels.


The suspension bracket of a back wheel of Audi 80 quattro consists of the following details:

1–top cross-section lever;
3–case of the bearing of a nave of a wheel;

4–power shaft;
5–bottom cross-section lever.

  • All four wheels should have the identical piece of a way passed for one turn (ideally identical depth of a profile of a protector).
  • Balancing of wheels on the car (dynamic balancing) is possible only if all four wheels are raised. The drive should proceed from the car engine (not from the balancing machine).

     Important: to disconnect the hand brake.

Winter tires

  • Winter tires are better for applying not only on front, but also on all-wheel drive cars not so much because of dynamic, how many because of brake properties.
  • Chains of antisliding should be put on in those places where their use, as well on all-wheel drive models is offered. And here argument in favor of their application are the best brake properties.


  • If at towage all four wheels of Audi slide on a paving, it is not required any special instructions.
  • If wheels of one of bridges (after accident) any more in a condition to slide, it is necessary to ship the car on the low-frame wrecker.
  • If the similar wrecker out of striking distances, it is possible to tow the car and with one raised bridge. Condition: not further than 50 km and not quicker, than 50 km/h. Blocking of differential should not be included (however, it and is so improbable). At an exit for a framework of the specified limits transmission damages because of a lack of greasing are possible.