Audi 80/Avant (B4)

Audi 80/Avant
The description
System of release of the fulfilled gases
Cooling system
Fuel tank and the fuel pump
The air filter and intake channels
Injection system
- Coupling
   Drive of management of coupling
   Coupling service life
   Coupling check
   Check of a hydraulic drive of coupling
   Coupling removal
   The list of malfunctions
Transmission and transmission
Suspension bracket and steering
Brake system
Antiblocking system of brakes
Wheels and tyres
body electrosystem
Ignition system
Signalling devices
Devices and auxiliary devices
Heating and ventilation
Body elements
Search of malfunctions

Coupling check

In the established condition it is impossible to distinguish deterioration of a conducted disk. Deterioration first sign is проскальзывание couplings.

Sliding coupling attracts attention at first on the highest transfer at movement with cargo. The engine grows, and speed remains former. About deterioration you can receive certain concept, having done the following experience which should not be repeated too often.

Slips coupling or not?


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

Whether "conducts" coupling?

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


  1. To leave the engine to work in an idling mode.
  2. Completely to squeeze out a coupling pedal, to wait about three seconds, 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 resulted in the list of malfunctions in the end of the head.