Removing and installing front sealing flange: Audi A4 B6/B7 (AFB, AJM, AKE, AKF, …)

🧭 Before you start

Fits: Audi A4 B6/B7 (8E)

Don't miss

• Before removing, mark direction of rotation of poly V-belt with chalk or felt-tipped pen. If the belt runs in the opposite direction when it is refitted, this can cause breakage.
• Place a cloth over the exposed section of the sump.
• Clean sealing surfaces; they must be free of oil and grease.
• Cut off tube nozzle at front marking (nozzle approx. 2 mm ∅).
• The sealant bead must not be thicker than specified, otherwise excess sealant could enter the sump and clog the strainer in the oil pump.

🔧 Engine codes this applies to

📋 Procedure

1. Move lock carrier to service position .
2. Lift off engine cover (arrows). [Note: Before removing, mark direction of rotation of poly V-belt with chalk or felt-tipped pen. If the belt runs in the opposite direction when it is refitted, this can cause breakage.]
3. Turn the tensioner in the direction of the (arrow) to slacken the poly V-belt.
4. Remove poly V-belt.
5. Unscrew bolt (arrow) and remove idler roller for poly V-belt.

6. Remove toothed belt .
7. Remove crankshaft sprocket; use counterhold3415 to lock sprocket in place.
8. Unscrew bolts (1 ... 10).
9. Pull off sealing flange (front).
10. Drive out oil seal with flange removed. [Note: Place a cloth over the exposed section of the sump.]
11. Carefully remove any sealant residue on the cylinder block and sump.
12. ⚠ Wear safety goggles. — Remove sealant residue from sealing flange with rotating plastic brush or similar.
13. Clean sealing surfaces; they must be free of oil and grease.
14. Cut off tube nozzle at front marking (nozzle approx. 2 mm ∅).
15. Apply a thin bead of sealant at the edge of the joint between the cylinder block and the sump (arrows).
16. Apply the bead of sealant onto the clean sealing surface of the sealing flange as illustrated (arrow). [Note: The sealant bead must not be thicker than specified, otherwise excess sealant could enter the sump and clog the strainer in the oil pump.]
17. Coat the lower sealing surface on the sealing flange lightly with sealant (hatched area). [Note: The sealing flange must be installed within 5 minutes after applying sealant.]
18. Push the sealing flange carefully onto the dowel sleeves on the cylinder block.
19. Tighten bolts in the specified sequence:
20. Tighten bolts (1 ... 6).
21. Tighten bolts (7 ... 10).
22. Install crankshaft oil seal (pulley end) .
23. Renew centre bolt for toothed belt sprocket.
24. Install crankshaft sprocket; use counterhold3415 to lock sprocket in place.
25. Install toothed belt (adjust valve timing) .
26. Install the pulley .
27. Install poly V-belt .
28. Install lock carrier with attachments General body repairs, exterior50.
29. Allow stop for torque reaction support to rest on rubber buffer for torque reaction support under its own weight and tighten bolts (arrows).
30. Install front bumper cover General body repairs, exterior63.
31. Check headlight adjustment 803.

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