Audi 80/Avant (B4)

Since 1991-1995 of release

Repair and car operation

Audi 80/Avant
- The description
   The chassis
   15-inch wheels
   Brake system
   Passive safety
   Full drive
   Distributive Torsen-differential
   Dynamics of movement at a dry road covering
   Instructions on operation for all-wheel drive cars
   Blocking of differential of the back bridge
   Motor compartment
   Regular servicing
   The workplace organisation
   Lubricant works
   The oil expense
   Correct choice of engine oil
   Replacement of engine oil and the oil filter
   Check of level of a 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
   The control of level ATF in an automatic transmission
   Check of level of oil in the main transfer of an automatic transmission
   Replacement ATF
   Greasing тросовых drives, hinges and locks
+ Engines
+ System of release of the fulfilled gases
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and воздухозаборные channels
+ Injection system
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Antiblocking system of brakes
+ Wheels and tyres
+ Kuzovnaja electrosystem
+ Ignition system
+ Illumination
+ 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 карданный the shaft is separated from a transmission, the drive is absent.

Check of brakes


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

Capacity check


    Capacity check cannot be made on the usual test bed by definition of capacity for two driving wheels. It is necessary to use the test bed for four wheels.


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

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

4 – a power shaft;
5 – the 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 in the event that all four wheels are raised. The drive should proceed from the car engine (not from the balancing machine tool).

     Important: to disconnect a manual brake.

Winter tyres

    Winter tyres are better for applying not only on front, but also on all-wheel drive cars it is not so much because of dynamic, how many because of brake properties. Chains противоскольжения should be put on in those places where their use, as well on all-wheel drive models is offered. Here again argument in favour of their application are the best brake properties.


    If at towage all four wheels Audi slide on a road covering 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 низкорамный эвакуатор. If similar эвакуатор out of striking distances, it is possible to tow the car and with one raised bridge. A condition: not further than 50 km and not faster, than 50 km/h. Differential blocking should not be included (however, it and so it is improbable). At an exit for frameworks of the specified limits damages of a transmission because of a greasing lack are possible.