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
   Drive of management of coupling
   Coupling service life
   Coupling check
   Check of the hydraulic drive of coupling
   Coupling removal
   List of malfunctions
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrical system
+ System of ignition
+ Lighting
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications

Coupling check

Wear of the conducted disk in the established state it is impossible to distinguish. The first sign of wear is coupling slipping.

The sliding coupling attracts attention at first on the highest transfer at the movement with freight. The engine gains steam, and speed remains former. You will be able to receive a certain concept about wear, having done the following experience which should not be repeated too often.

Slips coupling or not?


  1. To put the car on the emergency brake, to start the engine.
  2. To include the third transfer, slowly to squeeze out coupling and to give gas.
  3. At the good emergency brake the engine has to decay.
  4. If the engine continues to work, it is necessary to repair coupling.

Whether "conducts" coupling?

If the transmission difficult switches even at the heated-up engine or process of switching is followed by the scratching or creaking sounds, most likely, coupling completely is not switched off, i.e. it "conducts". The similar effect is caused by damages of a transmission quite seldom. To be completely sure, we will make experiment with the first or reverse gear:


  1. To leave the engine to work in the idling mode.
  2. Completely to squeeze out a coupling pedal, to wait about three moment, and then to try to include the first or back transfers.
  3. If transfer joins hardly or the transmission creak is audible, it means that coupling "conducts". The conducted disk rotates thus not absolutely freely.
  4. To check hydraulics of coupling and to pump over.
  5. Once again to make the above described experiment.
  6. Other reasons of not divided coupling are given in the list of malfunctions at the end of the head.