Removing and installing coolant pipe (top rear) — AUDI

🔧 Engine codes this applies to

📋 Procedure

1. Drain coolant .
2. Remove front silencers on both sides .
3. Remove plenum chamber partition panel General body repairs, exterior50Bulkhead; Exploded view - plenum chamber partition panel.
4. Release hose clips (arrows) and remove air pipe (left-side).
5. Detach electrical connectors from bracket, unplug connectors and move electrical wiring clear:

6. Move clear electrical wiring harness for Lambda probe 2G108 and Lambda probe 2 after catalytic converter G131. [Note: The catalytic converter for cylinder bank 1 (right-side) is located on the left side of the vehicle.]
7. Unscrew nuts (arrows) on cylinder bank 1 (right-side) and push catalytic converter on left side of vehicle towards rear. [Note: The catalytic converter for cylinder bank 2 (left-side) is located on the right side of the vehicle.]
8. Unscrew nuts (arrows) on cylinder bank 2 (left-side) and push catalytic converter on right side of vehicle towards rear.
9. Unscrew bolts (1, 4, 7) and remove brackets (2, 6).
10. Disconnect coolant lines (3, 5) from turbocharger on both sides.
11. Release hose clip (1) and detach air hose.
12. Remove bolt (2).
13. Move vacuum line clear and push towards rear.
14. Remove bolts (1, 3) and press coolant pipe (bottom rear) (2) towards rear.
15. Unscrew bolts (1, 2, 3) and detach support (4) for turbocharger.
16. Remove bolts (1 and 2). [Note: A further bolt is fitted for coolant pipe (right-side) on some versions.]
17. ⚠ Avoid damage to coolant pipe.Do not bend coolant pipe. — Pull off coolant pipe (top rear) from timing chain cover (right-side) (arrow) and detach. [Note: Renew gaskets, seals and O-rings.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.]
18. Install air ducts with screw-type clips .
19. Install plenum chamber partition panel General body repairs, exterior50Bulkhead; Exploded view - plenum chamber partition panel. [Note: Do not reuse coolant.]
20. Fill up with coolant .

Other AUDI procedures

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• Removing and installing engine oil cooler (right-side)
• Removing and installing water radiator (front) for charge air cooling circuit
• Removing and installing water radiator (left-side) for charge air cooling circuit - vehicles with engine codes CGTA/CTFA
• Removing and installing Hall sender 3G300, cylinder bank 1 (right-side)
• Removing and installing toothed belt · 56 torque figures
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