Audi A4, S4

since 2000 of release

Repair and car operation



Audi A4, S4
+ Introduction
+ Governing bodies and receptions of safe operation
+ Current leaving and service
- Engine
   Specifications
   Removal and installation of the top cover of the engine / bottom protection of an impellent compartment/stretcher
   Compression check in engine cylinders, identification of leaks
   Engine check by means of the vacuum gage
   + 4-cylinder petrol engines
   + 6-and 8-cylinder petrol engines
   - 4-cylinder diesel engines
      General information
      Removal and installation of a gear belt, engines of 1.9 l (AVB, AWX, AVF)
      Natyazhitel of a belt with damping by a friction
      Removal and installation of a head of cylinders, diesel engines of 1.9 l (AVB, AWX, AVF)
      Removal and installation of a belt of a drive of auxiliary units
   + 6-cylinder diesel engines
   + System of greasing of the engine
+ Systems of cooling, heating and air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
+ Systems of electric equipment of the engine
+ Manual box of gear shifting
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment


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4-cylinder diesel engines

General information

Diesel 4-cylinder engine of 1.9 l of TDI

1 — the Camshaft
2 — the Block the pump nozzle
3 — the Gear belt
4 — the Glow plug
5 — Klinova a belt
6 — the Cranked shaft

7 — the Oil pump
8 — the Index of level of oil
9 — the Oil filter
10 — the Flywheel
11 — the oil Refrigerator
12 — the Refrigerator of air of pressurization (interkuler)

Engines of 1.9 l – ryadny, with one verkhneraspolozhenny cam-shaft (OHC). The camshaft located in a head of cylinders, is actuated through a gear belt from a cranked shaft. Injection of fuel is carried out the pump nozzles in which are united the fuel pump of a high pressure (TNVD), the valve of management and a nozzle. The pump nozzle are actuated from a camshaft through additional cams. The engine is equipped with a turbokompressor with changeable geometry turbines (VTG supercharger).