31 21 180 Replacing the front wheel bearing

Special tools required: 

• 31 2 230 
• 11 8 580 

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Necessary preliminary tasks: 

• Remove the FRONT BRAKE DISCS , and/or REAR BOTH BRAKE DISCS .
• Refer to: (F34 VEHICLES ONLY): LOOSENING THE TENSION STRUT ON THE SWIVEL BEARING .

Slacken nut (1).

Tightening torque, refer to: 31 31 3AZ .

Pull out screw.

Installation note: 

Replace nut (1).

Bolt head points in direction of travel.

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To release wheel bearing screw connection:

• Expand swivel bearing with special tool 31 2 230  .
• Pull swivel bearing approx. 5 cm towards the bottom.

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Installation note: 

Keep press fit of swivel bearing and spring strut in lower area clean and free from oil and grease.

Align swivel bearing (1) to positioning pin (2) on the rear side of the spring strut along the gap and slide all the way in.

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Release screws (1) with special tool 11 8 580  .

Tightening torque, refer to: 31 21 1AZ .

Press off wheel bearing from swivel bearing using a suitable tool.

Installation note: 

Replace microencapsulated screws.

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Installation note: 

Keep contact surface (1) of swivel bearing and wheel bearing clean and free from oil and grease.

When reusing, all the threads on the wheel bearing must be recut.

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