Removing and installing connecting piece with oil separator — AUDI

🧭 Before you start

Fits: Audi A4 B5 (8D)

• Renewed: gaskets

Don't miss

• Mark injector pipes according to cylinder (e.g. with felt-tip pen).
• Renew gaskets, seals and O-rings.

🔧 Engine codes this applies to

📐 60 workshop diagrams for AFB

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Detach caps on engine cover panel.
2. Unbolt and remove engine cover panel (arrows).
3. Mark injector pipes according to cylinder (e.g. with felt-tip pen).
4. Disconnect injector pipes one by one with ring spanner3035.
5. Remove heat shield above turbocharger (arrows).

6. Unscrew bolt (left-side) on mechanical exhaust gas recirculation valve (2).
7. Unscrew nuts (1) and (3).
8. Take out mechanical exhaust gas recirculation valve with exhaust gas recirculation pipes.
9. Remove hose (1) from connecting piece with oil separator.
10. Unscrew bolts (2) and remove connecting piece with oil separator. [Note: Renew gaskets, seals and O-rings.]
11. Install injector pipes one after the other (from bottom to top).
12. Tighten with torque wrenchV.A.G 1331, and tool insert AF 17V.A.G 1331/6.
13. Tighten with torque wrenchV.A.G 1331, ratchetV.A.G 1331/1 and socket T40055.
14. Check fuel system for leaks .

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