Audi A4, S4
Introduction
Controls and receptions of safe operation
Current leaving and service
The engine
- Systems of cooling, heating and the air conditioner
   - Cooling system
      The general information
      Antifreeze - a protection frame from freezing
      Replacement of a cooling liquid
      Removal and thermostat installation
      Thermostat check
      Replacement of hoses of system of cooling
      Removal and radiator installation
      Removal and installation of the fan of a radiator
      Removal and installation of the pump of a cooling liquid
    Systems of ventilation, heating and air conditioning
Power supply systems, release and decrease in toxicity of the fulfilled gases
Systems of an electric equipment of the engine
Manual box of a gear change
Automatic transmission
Coupling, power shafts and differential
Brake system
Suspension bracket and steering
Body
Onboard electric equipment




Removal and radiator installation

Removal

 PERFORMANCE ORDER

    Merge cooling liquid, address to Section Replacement of a cooling liquid. Remove a forward bumper, address to Section Removal and installation of a forward bumper.
    The diesel engine of 1.9 l: Remove an air line before a cooler наддуваемого air.
    Disconnect air lines at the left and to the right of a radiator (an arrow on an accompanying illustration).
    Disunite a socket (1) relays of pressure of the conditioner.
    Disunite a socket (2) gauges of external temperature. (3) - bolts of fastening of the condenser. Take aside two electric wires.
    Engines 2.0, 3.0 l (ALT, AWA, ASN): Disconnect a coil of a hydraulic liquid of the hydraulic booster (3) and (4). (1) – the tip of the gauge of low pressure; (2) – the tip of the gauge of external temperature.

Do not open a contour of cooling of the conditioner. Danger of accident!

    Disconnect the condenser from a radiator (arrow).

For an exception of damages of the condenser, and also hoses/pipelines of a cooling liquid watch that wires and hoses were not braided, were not rumpled and were not bent.

    Incline cautiously the condenser downwards and put it. Engines 2.4, 3.0 l: remove the left top cover of the engine.
    Disconnect a hose from a radiator for what remove lock скобу at a connecting flange (the marksman on an accompanying illustration).
    Models with АТ: Disconnect below and above from a radiator pipelines of a liquid for АТ and close them.
    Disconnect a hose of a cooling liquid at the top of a radiator for what release lock скобу at a connecting flange (the marksman on an accompanying illustration).
    Release the top clips of a radiator and take out upward.
    Incline a radiator forward and take out from rubber support in gathering with a ring of the fan and the fan.

Installation

 PERFORMANCE ORDER

    Replace the worn out rubber support on holders of a radiator. Installation is carried out in sequence, return to removal.

If the radiator was replaced, it is necessary to replace all volume of a cooling liquid.