Wheel Bearing Housing, Wheel Bearing Unit And Coil Spring Shock Absorber Overview, AWD

Fig 1: Identifying Wheel Bearing Housing, Wheel Bearing Unit And Coil Spring Shock Absorber Overview

Courtesy of AUDI OF AMERICA, LLC

1. Drive Axle
   • Different versions, Refer To the Parts Information..
2. Backing Plate
3. Bolt
   • Tightening specification, Refer To THREADED CONNECTION BETWEEN DRIVE AXLE AND WHEEL HUB, LOOSENING AND TIGHTENING .
4. Upper Transverse Link
5. Nut
   • 95 Nm
   • Always Replace If Removed.
   • Must be tightened in the curb weight position. Refer To WHEEL BEARING WITH COIL SPRING, LIFTING TO CURB WEIGHT POSITION .
6. Eccentric Washer
7. Bolt
8. Bracket
   • For the brake hose, brake caliper wiring harness and rear wheel speed sensor -- wiring harness.
9. Bolt
   • 10 Nm
10. Rear Speed Sensor
11. Bolt
    • 9 Nm
12. Bonded Rubber Bushing
    • Cannot be replaced separately.
13. Ball Bearing
    CAUTION:

    • Avoid contaminating with dirt and damaging the seal when setting down/storing. Refer To Fig 2
    • Wheel bearing unit, removing and installing, Refer To WHEEL BEARING UNIT .
    • Wheel bearing unit, servicing, Refer To WHEEL BEARING UNIT, AWD .
14. Wheel Hub
    CAUTION:

    • Avoid contaminating with dirt and damaging the seal when setting down/storing. Refer To Fig 2
    • Wheel bearing unit, removing and installing, Refer To WHEEL BEARING UNIT .
    • Wheel bearing unit, servicing, Refer To WHEEL BEARING UNIT, AWD .
15. Brake Shield
16. Bolt
    • 10 Nm
17. Brake Disc
18. Collar Bolt
    • 200 Nm + 180° turn
    • Always Replace If Removed.
19. Bolt
    • 5 Nm
20. Tie Rod
    • There are versions made of aluminum and steel. For allocation, Refer To the Parts Information..
    • A mixed installation is not permitted.
21. Bolt
    • 90 Nm + 90° turn
    • Always Replace If Removed.
    • Must be tightened in the curb weight position. Refer To WHEEL BEARING WITH COIL SPRING, LIFTING TO CURB WEIGHT POSITION .
22. Bolt
    • 120 Nm + 360° turn
    • Always Replace If Removed.
    • Must be tightened in the curb weight position. Refer To WHEEL BEARING WITH COIL SPRING, LIFTING TO CURB WEIGHT POSITION .
      NOTE:

      Wheel alignment is necessary if the bolt is removed.

23. Spacer Tube
    • Always Replace If Removed.
24. Nut
    • Always Replace If Removed.
      CAUTION:

      • Do not tighten the threaded connection using the nut.
      NOTE:

      Wheel alignment is necessary if the nut is loosened.

25. Lower Transverse Link
26. Bonded Rubber Bushing
    • Replacing, Refer To WHEEL BEARING HOUSING RUBBER BONDED BUSHING .
27. Wheel Bearing Housing
    • Removing and installing, Refer To WHEEL BEARING HOUSING .
28. Bolt
    • 80 Nm + 90° turn
    • Always Replace If Removed.
29. Washer
    • Serves as corrosion protection.
    • Always use.
30. Bolt
    • 150 Nm + 180° turn
    • Always Replace If Removed.
    • Must be tightened in the curb weight position. Refer To WHEEL BEARING WITH COIL SPRING, LIFTING TO CURB WEIGHT POSITION .
31. Shock Absorbers
    • Removing and installing, Refer To SHOCK ABSORBER .
32. Protective Sleeve
33. Buffer Stop
34. Bolt
    • 50 Nm + 45° turn
    • Always Replace If Removed.
35. Upper Shock Absorber Mount
    • Installed position, Refer To SHOCK ABSORBER, FWD .
36. Nut
    • 35 Nm
    • Always Replace If Removed.
37. Protective Cap

Avoid contaminating with dirt and damaging the seal when setting down/storing.

Fig 2: Always Set Wheel Bearing Down On Wheel Hub -2- (Wheel Bearing -1- Faceing Up)

Courtesy of AUDI OF AMERICA, LLC

• The wheel bearing -1- must always face up.
• Always set the wheel bearing down on the wheel hub -2-.
• Never reach into the inside when lifting the wheel bearing.
  Fig 3: Correct & Incorrect Holding Of Wheel Bearing

  Courtesy of AUDI OF AMERICA, LLC
• Hold the wheel bearing only on the outside.

The same procedure also applies to the wheel bearing without a wheel hub.