Front

Replacing Bearings (Wheel Hub) For Front Wheel


Remove brake disc.
Remove ABS pulse generator





1 Wheel hub
2 Collar nut
3 Stub shaft
4 Dust cap
5 Sealing cap





Remove sealing cap with screwdriver/chisel





Release collar nut with cross-cut chisel and remove with special tool 31 2 080.





Pull off bearing unit with special tool 312 116/33 4 201/202/203 and wheel studs (1).

Caution!
Do not use a bearing unit again once it has been removed!





If necessary, pull inner bearing race off axle stub.
Attach special tool 33 4 406/401 to inner bearing race and compress until special tool can still just be turned.
Withdraw inner bearing race with special tool 33 4 402.





Withdraw inner bearing race without special tool 33 4 406:
If inside bearing inner ring remains on stub axle after pulling off bearing unit, unscrew guard plate.
If necessary, bend back dust guard plate so that guard plate can be removed.





Bend back dust guard plate (1). Fit pulling-off claws of special tool 00 7 500 behind bearing inner race (2). Pull off bearing inner race with special tool 00 7 500 and 31 2 106.





Note: Special tool 00 7 500 with fitted pulling-off claws.

Installation:





If applicable, install guard plate.





Fit new dust guard plate (2).
Screw in guide sleeve (1) of special tool 31 2 110 for entire length of threads and pull on new bearing unit.





Replace collar nut and tighten down with special tool 31 2080.
Collar Nut (Bearing Unit) 290 Nm

Warning!
Lock collar nut. Calk on flat area in axle stub.





Replace sealing cap.
Coat edge (mating surface to wheel hub) over entire circumference with sealing compound, and fit sealing cap.