- In order to obtain the correct taper roller bearing preload, the housing cover must be correctly shimmed.
![](https://motoinstruction.ru/img/bmw/21/127410.jpg)
- Using depth gauge, measure distance "a".
![](https://motoinstruction.ru/img/bmw/21/127411.jpg)
- Place measuring ring, BMW No. 332601, in position and secure.
- Measure from the outer ball bearing race through the cutout in the measuring ring to the housing mating face and determine distance "b".
- Distance "a" - distance "b" = shim thickness (without preload).
- Lightly grease the shim of the selected thickness, and place it on the crown wheel.
- Preload — 0.05...0.1 mm (0.002...0.004 in)