Overview - Wheel Bearing

Fig 1: Exploded View Of Wheel Bearing

Courtesy of AUDI OF AMERICA, LLC

1. Wheel Bearing Unit
   • With sensor ring for ABS speed sensor
   • Check sensor ring. Refer to ABS SENSOR RING, CHECKING
   • The lateral run-out on the outer diameter of the wheel hub when installed can be a maximum of 0.02 mm.
   • Measure the lateral run-out with the Dial Indicator - 0-10mm: VAS6079  and Dial Indicator Bracket: VAS6079/1 
   • Removing and Installing. Refer to WHEEL BEARING UNIT, REMOVING AND INSTALLING .
   • Cannot be disassembled
   • Handling. Refer to Fig 2
2. Bolt
   • 70 Nm +90°
   • Replace after removing
3. Drive Axle
   • Do not let the drive axle hang down or the inner joint could be damaged if it is bent too far.
   • Lightly coat the splines on the outer joint with assembly paste before installing the outer joint into the wheel hub. Refer to the Parts Information.
4. Wheel Bearing Housing
   • Removing and Installing. Refer to WHEEL BEARING HOUSING, REMOVING AND INSTALLING .
5. Bolt
   • Replace after removing
   • Loosening and tightening. Refer to DRIVE AXLE THREADED CONNECTION, LOOSENING AND TIGHTENING 
   • Clean the threads in the CV joint with a thread tap before installing.

Wheel Bearing, Handling 

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

Courtesy of AUDI OF AMERICA, LLC

• Position the wheel bearing -1- so that it faces upward.
• Always set the wheel bearing down on the wheel hub -2-.

• Never reach inside when lifting the wheel bearing.

  Courtesy of AUDI OF AMERICA, LLC

• Hold the wheel bearing only on the outside.