Wheel Bearing Housing And Wheel Bearing Unit Overview: Notes

Fig 1: Identifying Wheel Bearing Housing And Wheel Bearing Unit Overview

Courtesy of AUDI OF AMERICA, LLC

1. Nut
   • 40 Nm
   • Always replace if removed.
2. Upper Front Control Arm
3. Upper Rear Control Arm
4. Bolt
   • Always replace if removed.
5. Washer
6. Wheel Bearing Housing
   • Removing and installing, refer to WHEEL BEARING HOUSING .
   • Different versions, for allocation refer to the Parts Information..
   • Distinguishing characteristic, refer to WHEEL BEARING HOUSING AND WHEEL BEARING UNIT OVERVIEW .
     WARNING:

     When exchanging the wheel bearing housing, make sure the length of the thread on the tie rod end is sufficient (there must be approximately 5 mm extra thread). If this is not the case, then install a new tie rod end with a longer thread pin. Refer to the Parts Information..

7. Brake Shield
8. Bolt
   • 10 Nm
9. Bolt
   • 200 Nm + 180° turn
   • Replace after each removal. Refer to DRIVE AXLE .
   • Before installing, clean the threads in the CV joint with a tap.
10. Wheel Hub
    • Ejecting and pressing in, refer to WHEEL BEARING UNIT .
11. Wheel Bearing
    • Ejecting and pressing in, refer to WHEEL BEARING UNIT .
      CAUTION:

      • Avoid contaminating with dirt and damaging the seal when setting down/storing. Refer to Fig 2.
12. Bolt
    • 40 Nm
    • Always replace if removed.
13. Nut
    • Always replace if removed.
    • Different versions, for allocation refer to the Parts Information..
    • Pay attention to the different nut versions and to the tightening specifications. Refer to WHEEL BEARING HOUSING AND WHEEL BEARING UNIT OVERVIEW .
    • After loosening threaded connection of guide control arm to wheel bearing housing, adhesive residue must be removed on thread of linkage stub.
14. Control Arm
    • Different versions, for allocation refer to the Parts Information..
15. Nut
    • Always replace if removed
    • Different versions, for allocation refer to the Parts Information..
    • Pay attention to the different nut versions and to the tightening specifications. Refer to WHEEL BEARING HOUSING AND WHEEL BEARING UNIT OVERVIEW .
    • After loosening threaded connection on the ball joint to the wheel bearing housing, adhesive residue must be removed on thread of linkage stub.
16. Guide Link
    • Different versions. Allocation, refer to the Parts Information..
17. Tie Rod End
    • Different versions. Allocation, refer to the Parts Information..
18. Nut
    • Different versions. Allocation, refer to the Parts Information..
    • Pay attention to the different nut versions and to the tightening specifications. Refer to WHEEL BEARING HOUSING AND WHEEL BEARING UNIT OVERVIEW .
    • Always replace if removed.
19. Bolt
    • 9 Nm
20. Speed Sensor
21. Drive Axle
22. Bolt
    • 70 Nm
    • Always replace if removed.
23. Cap Bolts
    • 80 Nm + 90° turn
    • Always replace if removed.

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 unit 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.