Removing and installing intermediate flange - engine code letters AFB, AKE, AKN, AYM, BAU, BCZ, BFC — AUDI

🧭 Before you start

Fits: Audi A6 C5 (4B)

• Renewed: gaskets

Don't miss

• Leave the exhaust gas recirculation pipe (4) in position.
• Renew gaskets and self-locking nuts.Fit all cable ties in the original position when installing.

🔧 Engine codes this applies to

📋 Procedure

1. Remove front exhaust pipe together with main catalytic converter: vehicles with front-wheel drive , vehicles with four-wheel drive .
2. Remove exhaust elbow: vehicles with front-wheel drive , vehicles with four-wheel drive .
3. Remove front exhaust pipe together with main catalytic converter: vehicles with front-wheel drive , vehicles with four-wheel drive .
4. Remove starter catalytic converter: vehicles with front-wheel drive , vehicles with four-wheel drive .
5. Remove turbocharger .

6. Remove exhaust manifold together with intermediate pipe: left-side , right-side .
7. Release cable tie (1) at rear of heat shield and move wiring clear.
8. Unscrew bolts (arrows) and detach heat shield (2) from intermediate flange.
9. Unscrew bolt (3) on left of mechanical exhaust gas recirculation valve.
10. Remove nuts (2) and bolts (1). [Note: Leave the exhaust gas recirculation pipe (4) in position.]
11. Remove top left securing bolt (arrow 1) on engine/gearbox flange.
12. Unscrew bolts (arrows 2).
13. Guide out intermediate flange to rear right. [Note: Renew gaskets and self-locking nuts.Fit all cable ties in the original position when installing.]
14. Install exhaust manifold together with intermediate pipe: left-side , right-side .
15. Install turbocharger .
16. Install exhaust elbow: on vehicles with front-wheel drive , on vehicles with four-wheel drive .
17. Install front exhaust pipe together with main catalytic converter: vehicles with front-wheel drive , vehicles with four-wheel drive .
18. Install starter catalytic converter: vehicles with front-wheel drive , vehicles with four-wheel drive .
19. Install front exhaust pipe together with main catalytic converter: vehicles with front-wheel drive , vehicles with four-wheel drive .

Other AUDI procedures

• Removing and installing fuel gauge sender 2G169 (left-side)
• Removing and installing fuel filter - vehicles with 6-cylinder engine
• Adapting kick-down function - vehicles with automatic gearbox
• Dismantling and assembling pistons and conrods
• Testing fuel pump relay -J17 and activation - Vehicles with 6-cylinder engine
• Removing and installing toothed belt – Audi · 56 torque figures
• Removing engine – Audi A8 D3 · 41 torque figures
• Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
• Installing engine – Audi A8 D4 · 36 torque figures
• Removing and installing camshaft timing chain · 29 torque figures