31 21 180 Replacing bearings (wheel hub) for front wheel

WARNING: This page is about a different car, the 2010 BMW 535i, 2009 BMW 535i, and 2008 BMW 535i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove SWIVEL BEARING

IMPORTANT: When clamping swivel bearing unit, make sure it is only clamped at wheel bearing.

Clamp swivel bearing as illustrated.

Fig 1: Locating Clamp Swivel Bearing

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Release screws and remove swivel bearing upwards.

Fig 2: Locating Swivel Bearing Bolts

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Keep tapped holes (1) clean and free from grease.

Keep contact surface (2) of wheel bearing and swivel bearing clean and free from grease.

Installation:

If the wheel bearing is not replaced, all the tapped holes (1) in the wheel bearing must be reconditioned.

Replace screws.

Tightening torque 31 21 5AZ .

Fig 3: Identifying Tapped Holes

Courtesy of BMW OF NORTH AMERICA, INC.