31 21 180 Replacing bearings (wheel hub) for front wheel
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
There are wheel bearings installed with a thread pitch of 1.5 mm or 1.25 mm (screw connection of wheel bearing on swivel bearing):
- Make sure the allocation of the wheel bearing / screws is correct! If applicable, check the thread pitch with a thread gauge.
- Make sure that the torque allocation of the wheel bearing on the swivel bearing is correct!
Necessary preliminary tasks:
- Remove BRAKE DISC
NOTE:
- Check brake pads and REPLACE if necessary!
Slacken nut (1).
Tightening torque 31 12 2AZ .
Remove tension strut (2) from swivel bearing (3).
Release screws (1) and remove mount.
Tightening torque 31 21 1AZ .
Installation note:
Replace screws.
Keep tapped holes (1) clean and free from grease.
Keep contact surface (2) of wheel bearing and swivel bearing clean and free from grease.