A8L V8-4.2L (BFM) (2004)
Wheel Bearing: All Technical Service Bulletins
Drivetrain - Front Wheel Bearing Click/Pop On Turns
40 08 06
2010331/4
October 28, 2008. Supersedes Technical Service Bulletin Group No. 40 number 08-04 dated September 11, 2008 for reasons listed below.
Vehicle Information
40 Front wheel bearings click when turning steering wheel
Condition
Front wheel bearing makes clicking or popping noise when turning the steering wheel.
Technical Background
Surface corrosion can accumulate between the wheel bearing and bearing carrier.
Production Solution
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Service
For vehicles produced prior to VIN 4E_4N 006891
1. Disassemble wheel-bearing unit (Figure 1, 6).
2. Acquire new front wheel bearings, part number 4E0 498 625 B (Figure 1, 3) centrifugal discs/dust seals, part number 4E0 407 623 (Figure 1, 4),
one collar screw and four cap screws (Figure 1, 2).
WARNING:
The collar screw and all 4 cap screws must be replaced when disassembling and reassembling the wheel-bearing unit.
2. Prior to assembling new parts, apply a layer of Optimol paste (part number G 052 109 A2) on periphery of mating surface of wheel-bearing unit as
indicated by slash marks in Figure 2.