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
      The general data and security measures
      Sbrasyvanie pressure in fuel system
      Removal and installation of the fuel pump from the gauge of a stock of fuel
      Removal of air from fuel system (the petrol engine 1.8)
      Removal and installation of the fuel filter
      Removal and installation of the air filter
    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
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 of the fuel filter

The fuel filter. The diesel engine of 1.9 l

1 — the Stopper of removal of water
2 — the Sealing ring
3 — the Fuel filter. At the left behind the engine. Before installation fill the filter with diesel fuel
4 — the Hose of giving of fuel. To the dual pump
5 — the Sealing ring. Necessarily replace
6 — the Hose of return of fuel. From the dual pump
7 — the Adjusting valve. The arrow specifies towards a tank. At filter replacement remove lock скобу (9) and remove the adjusting valve with attached шлагами. Remove fuel hoses. At installation of the filter pay attention to sealing rings
At fuel temperature:
- More low 15С pass to the filter is opened
- From above 31С pass to the filter is closed

8 — the Hose of return of fuel to a fuel tank
9 — Lock скоба
10 — the Hose of giving of fuel
11 — the Carving plug
12 — the Holder
13 — the Holder
14 — Klemmnyj the screw
15 — the Bolt, 15нм
16 — the Nut, 10Нм

The fuel filter. The diesel engine of 2.5 l

1 — the Nut, 10Нм
2 — the Holder
3 — Lock скоба
4 — the Hose of return of fuel
5 Adjusting valve. Observe instructions to a position (7) илл.выше
6 — the Hose of return of fuel in a fuel tank
7 — the Hose of giving of fuel from a fuel tank

8 — the Stopper of removal of water, 4Нм
9 — the Sealing ring. Necessarily replace
10 — the Fuel filter with a sealing ring of the adjusting valve (5). On the right behind in an impellent compartment. The stream direction is designated by arrows. Before installation moisten with diesel fuel
11 — the Hose of giving of fuel to ТНВД
12 — the Plastic insert
13 — the Nut, 10Нм

Removal

 PERFORMANCE ORDER

    Observe security measures and the rules of cleanliness stated in Section the General data and security measures.

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

    Lift and establish the car on supports.
    3 Disconnect the right cover near to a fuel tank (arrows on an accompanying illustration).
    Substitute capacity under the fuel filter.

The pipeline of giving of fuel is under pressure! Before opening шлангового connections cover with its thick rag. Then remove pressure by a cautious detachment of a hose. Use goggles.

    Disconnect lines of giving of fuel (1) and (3) for what press on unblocking keys.
    Turn out the screw (2). Remove the fuel filter and merge fuel in the substituted capacity.

Installation

 PERFORMANCE ORDER

    Insert the fuel filter in the holder so that labels (1) and (2) stood opposite each other.

The arrow on the filter specifies directions of a current of a liquid.

    Tighten a collar of fastening of the filter the moment 3Нм.
    The further installation is carried out in sequence, return to removal.

After filter installation it is necessary to remove air from system.