Removing and installing tandem pump - vehicles with 4-valve engine — AUDI

🧭 Before you start

Fits: Audi A3 (8P, 2003–2012)

• Renewed: tandem pump gaskets

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• Renew tandem pump gaskets.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.Ensure proper seating of tandem pump actuator in camshaft.
• Connect fuel supply hose (2) (white marking) and fuel return hose (1) (blue marking) to tandem pump.

🔧 Engine codes this applies to

📋 Procedure

1. Pull dipstick (1) out of guide tube.
2. Lift engine cover panel at the sides (arrows 2) and pull off towards the front (arrow 3).
3. Re-insert dipstick in guide tube.
4. Lift off engine cover panel (outside (1) and inside (2)) by pulling up evenly.
5. Pull cover off air duct (release clips on sides) (arrows).

6. Unclip air duct at the bottom by releasing clips (arrows).
7. Detach air duct (bottom) together with air hose.
8. Unplug electrical connector (1) at air mass meter G70.
9. Detach vent hose (3) and air hose (2).
10. Unscrew bolt (4) and remove air cleaner housing.
11. Detach vacuum hose (arrow) going to brake servo from tandem pump.
12. ⚠ The fuel system is pressurised. Wrap a cloth around the connection before opening the system. Then release pressure by carefully loosening the connection.In extreme cases the temperature of the fuel lines and the fuel can be up to 100 °C after the engine is switched off. Allow the fuel to cool down before disconnecting the lines - danger of scalding.Wear protective gloves.Wear safety goggles. — Pull off fuel supply hose (2) (white marking) and fuel return hose (1) (blue marking) from tandem pump.
13. Connect compressed air line to diesel extractorVAS 5226.
14. Connect diesel extractorVAS 5226 to fuel return connection on tandem pump.
15. Operate diesel extractorVAS 5226 until no more fuel comes out of return connection.
16. Remove bolts (arrows).
17. Remove tandem pump from cylinder head. [Note: Renew tandem pump gaskets.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.Ensure proper seating of tandem pump actuator in camshaft.]
18. Install tandem pump and tighten the flange bolts (arrows).
19. Connect fuel supply hose (2) (white marking) and fuel return hose (1) (blue marking) to tandem pump.

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