Audi A4, S4
Introduction
Controls and receptions of safe operation
Current leaving and service
The engine
Systems of cooling, heating and the air conditioner
- Power supply systems, release and decrease in toxicity of the fulfilled gases
    Power supply systems of petrol and diesel engines
    System of injection of fuel of the petrol engine
    System of injection of fuel of the diesel engine
   - Systems of release and decrease in toxicity of the fulfilled gases. Турбокомпрессор
      Removal and installation of system of release. Replacement of the central, additional muffler, a trailer pipe
      Updating of a lining of system of release / a trailer pipe
      Systems of decrease in toxicity of release - the general information
      The Katalitichesky converter
      Removal and installation catalytic the converter and ljambda-probes
      Турбокомпрессор - the general information and safety measures
      Интеркулер - the general information
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 installation catalytic the converter and ljambda-probes

The engine of 2.0 l ALT

Ljambda-probes are located before and after catalytic the converter. For removal of ljambda-probes to remove каталитический the converter it is not required.

Removal

 PERFORMANCE ORDER

  1. Uncover the engine in an impellent compartment, address to Section Removal and installation of the top cover of the engine / the bottom protection of an impellent compartment/stretcher.
  2. Remove a broad tank of a cooling liquid.
  3. Disunite a socket of the index of temperature of a cooling liquid. Disconnect a broad tank and take him aside. Hoses of a cooling liquid do not disconnect.
  1. Disconnect the AKF-valve (1). Turn out screws (arrows on an accompanying illustration) and take out a hose for suction air.
  1. Disconnect a hose for suction air (1) from a hose (2). Remove a hose from the bottom party of a branch pipe suction air.
  1. Remove the case of the air filter, address to Section Removal and installation of the air filter.
  1. Disunite a socket (2) ljambda-probes 2, located after catalytic the converter.
  1. Disunite a socket (5) ljambda-probes 1, located before catalytic the converter. (1) – the detonation gauge, (3) – the gauge of number of turns of the engine, (4) – the gauge of a detonation 2.

Replacement of ljambda-probes

 PERFORMANCE ORDER

  1. Turn out ljambda-probes.
  2. Grease a carving of ljambda-probes with high-temperature paste G 05212A3. Paste should not get on шлиц cases.
  3. Fix ljambda-probes the moment 55Нм.
  4. If ljambda-probes were replaced only: Join sockets (2) and (5) ljambda-probes.

The further removal catalytic the converter

 PERFORMANCE ORDER

  1. Separate болтовое connection каталитический the converter / a final collector (arrows on an accompanying illustration).

Operation of lifting and car installation on supports is connected with danger! Therefore before operation carrying out familiarise with Razdelom Poddomkrachivanie and towage.

  1. Lift and establish the car on supports.
  1. At cars with lay/additional heating: Turn out bolts (arrows on an accompanying illustration) fastenings of an exhaust pipe of lay/additional heating to the bottom cover of an impellent compartment.
  1. Remove the bottom cover of an impellent compartment, address to Section Removal and installation of the top cover of the engine / the bottom protection of an impellent compartment/stretcher.
  2. Disconnect a cover over the right power shaft.
  1. Turn away bolts of fastening and disconnect каталитический the converter from a preliminary pipe (arrow). Take out каталитический the converter upward

Protect каталитический the converter from blows.