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
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
- Body electrical system
   Minus to "weight"
   Orientation in the electrical system
   Plug connections
   Central switchboard
   Additional block of the relay
   Relay and control units
   Unloading relay of contact of X
   Safety locks
   Table of safety locks
   Electric circuits
   + Full electroscheme of the Audi 80 car: 2-liter 4-cylinder engine (66 kW)
   + 2-liter 4-cylinder engine (85 kW)
   + 2,3-liter 5-cylinder engine (98 kW)
   + 2,6-liter 6-cylinder engine (110kvt)
   + Additional equipment
   + Battery
   + Generator
   Check of a condition of a maple or polilinovy belt
   Tension of a maple belt
   Tension of a maple or poliklinovy belt
   The belt torn maple
   Engine overheat because of damage of a maple belt
   Review of maple and poliklinovy belts
   Replacement of a maple belt
   List of malfunctions
   List of malfunctions
+ System of ignition
+ Lighting
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications


The starter on the right side of the engine is remote (on an illustration the 4-cylinder engine is shown)

1 – starter;
2 – a plug 50 wire (from the ignition lock);

3 – a plug 30 wire (from the accumulator);
4 – fastening of a starter.

On an illustration the starter (the 5-cylinder engine) in unassembled form is shown

1 – holder of brushes;
2 – anchor;
3 – reducer;
4 – the case of the bearing involving;

5 – case
6 – bearing case cover;
7 – bearing cover;
8 – lock washer, adjusting washer and sealing laying.

Start of the engine


  1. At turn of the ignition key food comes to the situation "Start" on the plug 50 the involving relays, located from above on a starter.
  2. Thus the lever of inclusion enters a starter gear wheel on spiral rounds into gearing with a gear wreath of a flywheel of the engine.
  3. Only after full gearing of a gear wheel the involving relay includes the power supply of the accumulator which is completely arriving from the plug 30, and then the starter strongly scrolls the engine.
  4. The engine of a starter and gear wheel are connected among themselves through a reducer. Therefore the electric motor rotates much quicker, than a gear wheel.
  5. When the engine is started – the gear wheel again leaves gearing with a flywheel.

Removal of a starter


  1. To disconnect a wire of "weight" from the accumulator, otherwise danger of emergence of short circuit is great.
  2. To remove the lower protection of a motor compartment (the head Elementy of a body).
  3. To lift the car in front on the right and to record.
  4. To remove all wires from the involving relay.
  5. To remove fastening of a starter in front in the direction of the movement (where it is).
  6. To unscrew fixing bolts or nuts on a fixing flange of a starter (that is behind in the direction of the movement).
  7. To remove a starter.

Replacement of brushes

If the starter does not work, perhaps, it is all about the wear of its brushes. Coal brushes can be got only complete with a fixing plate. As the starter case after opening needs to be pressurized, in shop of spare parts you will need also sealant D 3. Further models with the 4-cylinder engine will require a powerful soldering iron and solder.


  1. To remove a starter.
  2. On the closed party of a starter to turn out two screws with a cut in a head fixing a small cover of the bearing to uncover.
  3. To remove a lock washer and an adjusting washer from the shaft which is under a cover.
  4. To remove both screws (or nuts from hairpins) from a back cover of the case and to uncover.
  5. To measure length of brushes – the minimum length of 8 mm.
  6. For replacement of brushes to disconnect a fixing plate from the involving relay.
  7. Again to collect a starter, thus to seal a case cover, fixing screws and a cover of the bearing.

Removal of the involving relay


  1. To remove a starter.
  2. To disconnect a wire from a starter.
  3. To unscrew three screws on a fixing flange of the involving relay.
  4. To wring out a little involving relay and to take out an eye from the lever of inclusion of a starter.