31 51 065 Replacing O-ring for bearing block (AWD)

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Necessary preliminary tasks:

Remove BEARING SUPPORT .

Lever out O-ring (1) from bearing block (2) with a screwdriver.

Installation note:

Insert O-ring (1) in groove and coat with front axle differential oil.

Replace RADIAL SHAFT SEAL .

Fig 1: Identifying O-Ring And Bearing Block

Courtesy of BMW OF NORTH AMERICA, INC.