Removing and installing fuel delivery unit/fuel gauge senders, version for China — AUDI

🧭 Before you start

Fits: Audi Q3 (8U, 2011–2018); platform code 84

• Opens: fuel
• Renewed: seal

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• Danger! Fuel may escape.The fuel tank must not be more than 1/3 full when removing the fuel delivery unit, otherwise a large amount of fuel will escape. — Drain fuel tank if necessary .
• Danger! Fuel may escape.The fuel tank must not be more than 1/3 full when removing the fuel delivery unit, otherwise a large amount of fuel will escape. — Remove locking ring using wrench T10202.
• When removing the fuel delivery unit, make sure you do not bend the float arm of the fuel gauge sender.
• Install new seal (1) for flange (seal must be installed dry).
• Leakage riskThe seal must not be pinched or damaged when installing the flange. — Fit flange in correct installation position.

🔧 Engine codes this applies to

📋 Procedure

1. Observe safety precautions .
2. Observe rules for cleanliness .
3. ⚠ Danger! Fuel may escape.The fuel tank must not be more than 1/3 full when removing the fuel delivery unit, otherwise a large amount of fuel will escape. — Drain fuel tank if necessary .
4. Move front seats all the way forwards.
5. ⚠ To prevent irreparable damage to the electronic components when disconnecting the battery:Observe notes on procedure for disconnecting the battery. — Disconnect earth wire from battery terminal Electrical system27Battery; Disconnecting and connecting battery.

6. Remove rear seat bench General body repairs, interior72Rear seats; Removing and installing seat bench/individual seats.
7. Unclip cover (1) for flange (right-side) at retainers (arrows) using removal wedge3409.
8. Release retainer catch and unplug electrical connector (1) on flange.
9. ⚠ Risk of injury - fuel system operates under high pressure.To reduce the pressure in the fuel system, wrap a clean cloth around the connection and carefully loosen the connection. — Disconnect fuel lines (1 and 2) on flange. Disconnecting plug-in connectors
10. ⚠ Danger! Fuel may escape.The fuel tank must not be more than 1/3 full when removing the fuel delivery unit, otherwise a large amount of fuel will escape. — Remove locking ring using wrench T10202.
11. Pull flange (2) out of opening in fuel tank.
12. Remove seal (1) from opening in fuel tank.
13. Reach into opening in fuel tank and detach fuel supply line (1) from fuel delivery unit.
14. Reach into opening in fuel tank and disconnect supply line (2) for suction-jet pump. Disconnecting plug-in connectors
15. ⚠ Safety risk from escaping fuel: the fuel delivery unit is still filled.Use a cloth to catch escaping fuel. — Carefully pull fuel delivery unit (1) with fuel gauge sender out through opening in fuel tank by turning and tilting it as required. [Note: When removing the fuel delivery unit, make sure you do not bend the float arm of the fuel gauge sender.] [Note: Renew seal.Make sure that fuel hoses are securely fitted.When plugging in electrical connectors, make sure they engage correctly.When inserting the fuel delivery unit, make sure you do not bend the float arm of the fuel gauge sender.]
16. Carefully guide fuel delivery unit with fuel gauge sender in through opening in fuel tank.
17. Connect fuel supply line (1) by fitting onto fuel delivery unit as far as stop.
18. Connect supply line for suction-jet pump (2) so it engages audibly.
19. Route fuel hoses and electrical wiring as shown in illustration.
20. Position flange (3) with guide tubes (2) and (4) and fuel return pipe (5) on fuel delivery unit (1).
21. Insert guide tubes and fuel return pipe into guides as shown in illustration.
22. Install new seal (1) for flange (seal must be installed dry).
23. ⚠ Leakage riskThe seal must not be pinched or damaged when installing the flange. — Fit flange in correct installation position.
24. Press flange down against spring pressure.
25. Fit locking ring and secure using wrench T10202.
26. Connect fuel lines so they engage audibly.
27. Press fuel line in again and then pull to check that plug-in connector is correctly engaged.
28. Connect battery and perform steps required after re-connecting battery Electrical system27Battery; Disconnecting and connecting battery.
29. Put at least 5 litres of fuel into tank after installing fuel delivery unit.

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