- 1 - mounting nuts for connecting the pump to the power supply;
- 2 - electrical wires from the blind flange to the fuel pump;
- 3 - clamps for wires/hose;
- 4 - fuel hose;
- 5 - blind flange;
- 6 - clamping clamps;
- 7 - support body with fuel pump.
Quattro: The hose between the fuel pump (1) and the blind flange (2) must be installed as shown in the figure.
Front wheel drive: The illustration shows how to install the hose between the fuel pump (1) and the blind flange (2). When installing, turn the blind flange in the direction of the arrow as shown on the right.
This cut fuel tank shows how to remove the fuel pump. Although this requires a special tool (1), which turns the inner part (2) of the intake manifold housing slightly to the left. The tool catches the recesses of the inner part with its claws (arrows).
To install the fuel pump (1) with the inner part (2) of the intake manifold housing into the outer part (3) of its housing, the installation position must be correct: the mark on the inner part of the intake manifold housing must be opposite the mark on the outer part (arrows).
This is a job for an Audi workshop, as the fuel pump is removed together with the inner part of the intake manifold housing and can only be unscrewed from the outer part of the intake manifold with a special key 3307. Anyone who can borrow the key should proceed as follows:
Execution order
1. Make sure the fuel tank is filled to a maximum of 2/3, otherwise the petrol will leak out!
2. Fold back the boot floor covering.
3. Unscrew the black cap.
4. Disconnect the multi-pin connector.
5. Disconnect the recirculation pipe.
6. Disconnect the supply line.
7. Unscrew the synthetic union nut. Most often, they sit very tightly. Therefore, place the bluntest screwdriver on the edge of the nut, and lightly tap the handle of the screwdriver with a hammer to loosen the nut. If necessary, tap on different edges.
8. Now you can pull the blind flange of the fuel tank up a little.
9. Loosen the recirculation pipe clamp on the inside of the blind flange and pull the hose down.
10. Remove the fuel tank connector.
11. Install special key 3307 on the inner part of the intake manifold housing.
12. Turn the inner part of the intake manifold housing slightly to the left until it stops.
13. Remove the pump with the inner part and together with the blind flange from the fuel tank.
14. Mark/remember the installation position of the pump, hoses, wires and wire harnesses, as the parts must be installed accurately during installation.
15. After unscrewing the discharge pipeline (mounting position) the pump can be removed from the inner part of the intake manifold housing. This is done differently depending on the pump version:
16. 60mm pump: turn the sieve under the inner part of the intake manifold housing to the left, take out the pump. When installing, the spout on the side of the pump should be pushed into the groove. Pay attention to the gasket.
17. 40mm pump: Press the release clamp at the top of the inner part of the intake manifold housing, remove the pump. When installing, the pump can only be inserted in one position.
18. Installation: Install the hose between the pump and the blind flange as shown in the figures. The pump and the blind flange must be in the correct position relative to each other.
19. If everything is assembled correctly, the pump can be reinstalled into the outer part of the intake manifold housing in the fuel tank.
20. Please note: the mark on the outer part must be opposite the mark on the inner part.
21. Tighten the inner part again with key 3307, install the remaining parts.
22. Installation position of the blind flange: the arrow on the flange must be opposite the mark on the fuel tank. Front-wheel drive and all-wheel drive vehicles have their own arrow.
The original text of the material can be found on the website AudiManual.ru