Audi A4, S4

Since 2000 of release

Repair and car operation



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. turbocharger
+ 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 pump from the gauge of a stock of fuel

The fuel pump with the gauge of a stock of fuel. The petrol engine of all-wheel drive model

1 — the Gauge of the index of a stock of fuel
2 — the Block of giving of fuel
3 — the Sealing ring
4 — the Pipeline of return of fuel. Do not bend
5 — the Pipeline of giving of fuel. Do not bend

6 — the Socket
7 — Nakidnaja a nut, 80Нм
8 — the Hose приводной streams
9 — Ezhektor. At cars with lay heating about 2/03 releases with parallel packing of a soaking up line of a lay heater

The fuel pump is together with the gauge of a stock of fuel in a fuel tank. All-wheel drive models owing to necessity of placing карданного a shaft have a fuel tank, two-piece. In this case in each chamber the gauge of a stock of fuel is located. In the right chamber there is an electric fuel pump.

On an illustration the fuel pump of the petrol engine of all-wheel drive cars is above shown. The description concerns also cars with the diesel engine of 1.9 l, and also to diesel engines of 2.5 l about 5/02 releases.

The gauge of a stock of fuel consists of a float and a potentiometer. At decrease in level of fuel the gauge float falls also. The potentiometer connected with a float, raises thus electric resistance of the gauge. Pressure on panels of devices and the index of a stock of fuel thus goes down "empty" moves in a direction. At cars with a fuel tank, two-piece, the control panel processor calculates the general stock of fuel on the basis of signals of two gauges then gives out a signal on the index of a stock of fuel.

At cars with the petrol engine with direct injection the regulator of pressure of fuel is built in the block of giving of fuel. The pressure regulator cannot be disconnected from the block of giving of fuel.

At removal of the fuel pump a fuel quantity can flow out. Fuel steams are poisonous and inflammable. Therefore watch good ventilation of a workplace. Use the gloves proof in relation to influence of fuel. Do not apply open fire, danger of a fire! Keep in readiness the fire extinguisher.

Before removal of the fuel pump and the gauge empty an as much as possible fuel tank. The tank should be filled no more, than on 2/3. The radial fan which electric motor is outside of an air stream can be applied To workplace ventilation and has productivity not less than 15 m 3 / hour.

Models with a forward drive

Removal

 PERFORMANCE ORDER

  1. Disconnect a negative cable (-) the storage battery.

Observe instructions Replacement of the storage battery Has undressed.

  1. Sedan: Cast away, if necessary, forward the right back of a back seat. Remove luggage carrier facing, address to Section Removal and installation of facings (Sedan).
  2. The versatile person: Remove the left back, and also the left facing of a luggage carrier and a bath for a dirt, address to Section Removal and installation of facings (Versatile person).
  1. Disconnect a cover for запорного a flange (an arrow on an accompanying illustration).
  1. Release cautiously a hand or a small screw-driver a 4-contact socket of the gauge of a stock of fuel and the fuel pump (the marksman on an accompanying illustration) and disunite it.

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.

  1. Mark with a felt-tip pen fuel pipelines (1/2) before a detachment.
  1. Disconnect pipelines (1) givings and return (2), having compressed for this purpose keys for fixing on connecting муфтах. Close pipelines corresponding stoppers or a sticky tape.
  2. Models with lay heating: In addition disconnect the pipeline of giving of fuel to lay heating.
  1. Turn on накидную a nut the special tool 3217.

If the specified tool available is not present, turn on накидную a nut easy blows of a hammer through wooden брусок.

Avoid spark occurrence.

  1. Take out a few block of giving of fuel/gauge of a stock and a sealing ring from an aperture of a fuel tank.
  2. Shift запорный a flange at the block of giving of fuel inserted in a fuel tank a little aside.
  1. Release эжектор (1). For this purpose undertake a hand through a crack between запорным a flange and an adjusting aperture in a fuel tank.
  1. Take out эжектор (1) with even attached hose приводной streams (2) upwards.
  1. Disconnect a hose of a power stream from эжектора for what press a fixing key.
  1. Models with lay heating about 2/03 releases: Disconnect soaking up hose (1) for lay heating in a junction (2). For this purpose press a fixing key.
  1. Take out эжектор.
  2. Take out the block of giving of fuel.
  3. Merge fuel from the block of giving of fuel in a tank or any other capacity.
  1. If necessary, remove the gauge of a stock of fuel. For this purpose disunite sockets (1) and (2). Raise a screw-driver about basic laths (3) and (4) and remove the gauge downwards (an arrow on an accompanying illustration).

Installation

 PERFORMANCE ORDER

  1. If necessary, insert the stock gauge into givings of fuel directing on the block and press upwards so that the gauge was fixed. Fix a socket. Check up reliability of fastening.
  2. Put on a delivery hose joining эжектора.
  3. Insert the block of giving of fuel into a tank.
  4. Fix эжектор on the block of giving of fuel. For this purpose undertake a hand through a crack between запорным a flange and an adjusting aperture of a fuel tank.

Эжектор it should be fixed distinctly.

  1. Insert new consolidation запорного a flange into an aperture of a fuel tank.
  1. Check up position of the block of giving of fuel: the Label on запорном a flange (2) should coincide with a label on a fuel tank (1). If necessary, cautiously turn the giving block.
  2. Tighten накидную a nut запорного a flange the special tool 3217 moment 80Нм. It is possible to tighten a nut easy blows of a hammer through wooden брусок. Avoid formation of sparks!
  3. Put on according to the put labels giving and return hoses. Thus fix quick disconnect муфты. Arrows on a flange specify a direction of a stream of a liquid.
  4. Join a 4-contact socket.
  5. Attach a negative cable (-) the storage battery.

Observe instructions Replacement of the storage battery Has undressed.

  1. The further installation is carried out in sequence, return to removal.

Models with a full drive and front-wheel with the 6-cylinder diesel engine of release to 4/02

For отворачивания запорного rings the key 3087 is necessary. The tightening moment 145Нм.

The zapornyj flange is authorised to be opened only at the fuel tank filled no more than on 1/4. The fuel considerable quantity Otherwise follows.

In the right chamber the fuel pump with the gauge of a stock 1 is established. In the left tank the gauge of a stock 2 is established.

The all-wheel drive car, and also the front-wheel car with the 6-cylinder diesel engine of release to 4/02: the Fuel pump is fixed баянетным by a shutter. For its removal it is necessary to turn to the left on a corner 15 the special tool. At installation it is necessary to turn accordingly to the right. On баянетном a shutter there are two notches and an arrow specifying in a direction "is closed".