31 21 090 Replacing left / right swivel bearing

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Necessary preliminary work:

Remove SWIVEL BEARING .
Remove PULSE GENERATOR FROM SWIVEL BEARING .

Remove WHEEL BEARING (1).
Check wheel bearing and replace if necessary.
Modify BRAKE GUARD PLATE (2).
Modify line clip (3).

Fig 1: Identifying Wheel Bearing, Brake Guard Plate And Line Clip
Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Carry out wheel alignment procedure. See ALIGNMENT CHECK WITH VEHICLE LOAD UP TO DESIGN POSITION or ALIGNMENT CHECK WITH RIDE HEIGHT MEASUREMENT WITHOUT VEHICLE LOAD .