Audi A4

since 1994 of release

Repair and car operation

A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ exhaust System
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and absorption channels
+ injection System
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
- Electrotechnical equipment
   The minus is connected to weight
   The help for orientation in the electrotechnical equipment of the car
   Connections of wires
   Central switching knot
   Support of additional relays
   Box for electronics
   Relay and control units
   Switching relay
   H-contact of the relay of unloading
   Table of the relay and control units
   Safety locks
   Table of safety locks
   + Electric circuits
   + Accumulator
   - Generator
      Generator of an alternating current
      Control bulb of a charging
      Tension regulator
      The self-help in work with the generator and a tension regulator
      Movement with the defective generator
      Maple and poliklinovy belt
      Check of a condition of a maple and poliklinovy belt
      Replacement of a maple and poliklinovy belt
      Torn maple a belt
      Review: maple and poliklinovy belt
      The help at malfunctions
   + Starter
+ ignition System
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics

Check of a condition of a maple and poliklinovy belt

In the photo the tension device of a poliklinovy belt for the generator, сервонасоса and the vyazkostny fan is shown:

1–a ledge for installation of a rozhkovy key;
2 and 3 – openings for fixation of the tension device in the unloaded condition.

When openings coincide, the corresponding pin is inserted into them.

Fixation of the tension device of a poliklinovy belt for the generator, сервонасоса and the vyazkostny fan: the spring rotary lever (2) leans back to the right a rozhkovy key (in the arrow direction) until it will be impossible to insert a pin (1) into both coinciding openings.

To pull a klinorebristy belt of the compressor of climatic installation, it is necessary to weaken fixing bolts (1 and 3) on the console of a tension roller (4). Then establish a dinamometrichesky key (2) on a shestigrannik of the console of a tension roller and tighten on 25 nanometers in the arrow direction. Wrap fixing bolts.

Audi any more does not provide this point of maintenance, but nevertheless we believe that preventive check is in any case useful:

    For belt check completely turn several times the engine. Only this way you can really examine all surfaces of belts. Often belts have only the one and only crack which at check can appear lying precisely on a belt pulley. Urgently replace the torn or uncombed belts.

Check of a tension of a maple and klinorebristy belt

The subject of a tension of a maple belt in Audi is substantially obsolete, since:


    The device of an automatic tension of a big poliklinovy belt in four - and six-cylinder engines constantly provides its correct tension therefore at most that it is possible to make, it to subject to check operability of the device of a tension of a belt. By strong pressing a finger on the tense belt it should, resisting, to cave in, and the tension roller should turn away aside. When the belt is released, the roller leans back back and pulls a belt. If the belt freely hangs between belt pulleys, the tension roller is faulty (or forgot to take out a blocking pin from the tension device). To maple belt of the water pump in the four-cylinder engine rigid installation which cannot vary is set. If a belt will pull poorly and thereof the belt proskalzyvaniye on a belt pulley is too great, maple it is necessary to replace a belt. Ideal tension: at strong pressing by a thumb the belt between both belt pulleys should cave in approximately on 5 mm. Short poliklinovy the belt which is a drive of the compressor of climatic installation at the four-cylinder engine, is regulated at the first installation and keeps this tension throughout all service life.