Removing and installing wheel bearing housing (four-wheel drive vehicles) — AUDI

🧭 Before you start

Fits: Audi A8 D4 (4H, 2010–2017)

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• The speed sensor must be removed to avoid denting or damaging the encoder ring on the drive shaft.The encoder ring must be renewed if it is dented or damaged .
• Bonded rubber bushes can only be turned to a limited extent. The suspension mountings must therefore only be tightened when the suspension is in the unladen position.Raising suspension to reference position
• The bolt connection must not be tightened by the nut (4). — Tighten bolt (1).

📋 Procedure

1. Position vehicle on lifting platform .
2. Remove wheel.
3. Release and unplug connector (1) from rear speed sensor.
4. If fitted, remove bolt (2) and detach bracket (3) with wiring. [Note: The speed sensor must be removed to avoid denting or damaging the encoder ring on the drive shaft.The encoder ring must be renewed if it is dented or damaged .]
5. Remove bolt (2) and detach rear speed sensor(1).

6. Release and unplug connector (3) for electromechanical parking brake at bracket (2).
7. Remove bolt (1) and detach bracket (2) with wiring.
8. Detach brake caliper and brake disc 46.
9. Secure brake caliper to body so that weight of caliper does not stretch or damage brake hose or brake pipe.
10. Remove bolts (1) and take out splash plate (2).
11. Unscrew bolt (1) from coupling rod for vehicle level sender at lower transverse link.
12. Remove bolt (1) and use suitable lever to press air spring strut (2) off wheel bearing housing.
13. ⚠ The connection between the air spring strut and wheel bearing housing is under tension.There is a risk of injury when pressing the air spring strut off the wheel bearing housing, as the wheel bearing housing will recoil rapidly upwards. — Mark position of bolt (1) in relation to wheel bearing housing (2).
14. Unscrew nut (4) and take off eccentric washer (3).
15. Remove bolt (1).
16. Remove bolt (3).
17. Remove nut (4).
18. Remove bolt (1) and take out spacer tube (3) with washer (2).
19. Pull wheel bearing housing off drive shaft and remove. [Note: Bonded rubber bushes can only be turned to a limited extent. The suspension mountings must therefore only be tightened when the suspension is in the unladen position.Raising suspension to reference position]
20. Fit wheel bearing housing.
21. Install bolt (1) with washer (2) and spacer tube (3).
22. Screw on nut (4) loosely.
23. ⚠ The bolt connection must not be tightened by the nut (4). — Tighten bolt (1).
24. Fit brake caliper and brake disc 46.
25. Install rear speed sensor45.
26. Fit wheel.
27. Secure wheel Wheels and tyres44.
28. Tighten bolt securing drive shaft to wheel hub .
29. Check and adjust wheel alignment as required, see chart .

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