Removing and installing wheel bearing unit - front-wheel drive vehicles — AUDI

🧭 Before you start

Fits: Audi A5 (8T, 2007–2016), Audi A5 Cabriolet (8F), Audi A4 B8 (8K, 2007–2015)

Don't miss

• Loosen flange bolt securing wheel bearing unit (loosen only when vehicle is standing on its wheels - risk of accident) .
• If the wheel bearing unit can be pulled off the wheel bearing housing by hand, the wheel bearing unit is OK and does not have to be renewed.
• Always renew damaged (dented) grease caps.A damaged (dented) grease cap may allow moisture to enter the bearing. For this reason it is important to use the tool shown in the illustration.
• Tighten flange bolt securing wheel bearing unit (tighten only when vehicle is standing on its wheels - risk of accident) .

📋 Procedure

1. Raise vehicle on lifting platform.
2. Detach grease cap by tapping lightly on hub grease cap pullerVW 637/2.
3. Lever off grease cap with hub grease cap pullerVW 637/2.
4. Loosen flange bolt securing wheel bearing unit (loosen only when vehicle is standing on its wheels - risk of accident) .
5. Remove wheel.

6. Detach brake caliper and brake disc Brake system46Rear brakes; Removing and installing brake caliper.
7. Secure brake caliper to body so that weight of caliper does not stretch or damage brake hose or brake pipe.
8. Remove bolts (1) from splash plate (2).
9. ⚠ Do NOT detach the wheel bearing unit by pulling on the outer bearing race (wheel hub). — Use splash plate (1) to pull wheel bearing unit (2) slightly off stub axle (3). [Note: If the wheel bearing unit can be pulled off the wheel bearing housing by hand, the wheel bearing unit is OK and does not have to be renewed.]
10. As soon as stub axle is sufficiently exposed, reach behind seal (arrow). Use seal (arrow) to pull off wheel bearing unit and splash plate (neither shown in illustration).
11. ⚠ Avoid dirtying or damaging the seal when laying down or storing the wheel bearing. — Clean additional seal.
12. Fit additional seal and lubricate stub axle (arrow) lightly with lubricating paste.
13. Install brake caliper and brake disc Brake system46Rear brakes; Removing and installing brake caliper. [Note: Always renew damaged (dented) grease caps.A damaged (dented) grease cap may allow moisture to enter the bearing. For this reason it is important to use the tool shown in the illustration.]
14. Drive in grease cap with fitting sleeve3241/4.
15. Fit wheel.
16. Secure wheel .
17. Tighten flange bolt securing wheel bearing unit (tighten only when vehicle is standing on its wheels - risk of accident) .

🎬 Related video tutorial

Independent AUTODOC tutorial for the same job, filmed on a different model (A4 B6 (8E5)) — the technique carries over, the fasteners and figures on this page are the ones for your car.

How to change rear wheel bearing / rear hub bearing on AUDI A4 B6 (8E5)

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