Removing and installing front wheel bearing with wheel bearing housing installed — AUDI

🧭 Before you start

Fits: Audi TT Mk1 (8N)

• Special tools named: 3423, puller

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• A grease sachet containing 3g of grease is included with the wheel bearing set.
• Lower vehicle, but make sure that wheels do not yet touch ground.

📋 Procedure

1. Remove trim cap from light-alloy wheels (puller in vehicle tool kit).
2. Lift vehicle far enough to relieve load on front wheels.
3. Loosen nut / bolt securing drive shaft.
4. Remove wheels.
5. Detach coupling rod from suspension strut on both sides of the vehicle.

6. Pull spring clip out from bracket and detach brake hose.
7. Detach wire for speed sensor from suspension strut.
8. Unbolt brake caliper from wheel bearing housing.
9. Secure brake caliper to body with wire.
10. Detach brake disc (disc is secured to hub with cross-head bolt).
11. Remove brake disc splash plate.
12. Mark positions of nuts.
13. Remove bottom nuts from swivel joint.
14. Detach wishbone from swivel joint.
15. Press out drive shaft.
16. Remove drive shaft from wheel bearing housing and tie up.
17. Insert thrust bolts (1) in wheel bearing housing.
18. Attach support (2), hollow piston cylinder (3) with pull rod and special nut (4).
19. Hold appliance firmly and pull wheel hub out.
20. Remove circlip.
21. Set up thrust piece (1) with collar facing wheel bearing, thrust sleeve (2) with four stepped internal diameters towards wheel bearing housing and hollow piston cylinder (3)with pull rod and special nut (4).
22. Pull out wheel bearing by actuating pump.
23. Insert special tool (3423) as shown.
24. Screw cross-piece Kukko -18-0- into special tool (3423).
25. Mount special tool -40-105- on wheel hub and pull off inner bearing race by turning spindle. [Note: A grease sachet containing 3g of grease is included with the wheel bearing set.]
26. Set up wheel bearing (1), thrust piece (2) (fit with collar in bearing) and hollow piston cylinder (3) with pull rod on wheel bearing housing.
27. Fit thrust piece (4) (with wide collar towards wheel bearing housing) and special nut (5) on inner side of wheel bearing housing.
28. Press in wheel bearing by actuating pump.
29. Insert circlip with long-nose pliers.
30. Fit wheel hub (1) and hollow piston cylinder (2) with pull rod on wheel bearing.
31. Fit special nut (4) and thrust piece (3) (with collar facing special nut) on inboard side of wheel bearing housing.
32. Press in wheel hub by actuating pump.
33. Clean inner splines of wheel hub.
34. Screw on new 12-point nut as far as possible.
35. Secure brake caliper to wheel bearing housing. Brake system; Repair group 46; Servicing front brakes
36. Attach coupling rod to suspension strut with new nut.
37. Lower vehicle, but make sure that wheels do not yet touch ground.
38. Have a second mechanic press the brake pedal.
39. Tighten 12-point nut.

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