Procedures

33 21 ... Pressing output shaft out of drive flange and drawing in







Necessary preliminary tasks:
- Remove output shaft from rear axle differential.







IMPORTANT: Expand anti-twist lock sufficiently to avoid damaging thread when releasing collar nut (1).

Activate parking brake and release collar nut (1).
Tightening torque 33 41 1AZ.

Installation note:
Slightly grease the gearing at the shaft journal.
No oil permitted on thread of shaft journal or collar nut.
Replace collar nut (1) by positive peening at flat areas of output shaft.







Use special tool , see BMW Workshop Catalogue.

- Hydraulic unit - 81 64 2 155 744
- Adapter kit 1 - 81 64 2 155 745
- Adapter kit 2 - 81 64 2 155 746







- Secure output shaft against falling out.

The following work steps describe pressing out the output shaft:







The following tools are required to press out the output shaft from the drive flange, see graphic for arrangement:

Vehicle components:
I Drive flange hub
II Wheel carrier

Required components for all models and types:
1 Hydraulic unit
E3 Washer M24
F3 Spindle M24 (length 270 mm)
C1 Holding sleeve
B1 Adapter

* Components specific to model and type:
K* Wheel studs







Risk of damage.
Oil drive flange lightly and attach to gearing of output shaft.
To avoid damaging the tool, the load on the hydraulic pump must be observed during the insertion.

The following work steps describe drawing in the output shaft:







The following tools are required to fit the output shaft in the drive flange, see graphic for arrangement:

Vehicle components:
I Drive flange hub
II Wheel carrier
III Output shaft

Required components for all models and types:
1 Hydraulic unit
E1 Holding sleeveM24
D1 Washer
F2 Spindle M24 / M20 (length 335 mm)

* Components specific to model and type (thread diameter, output shaft):
G3 Adapter M27 x 1.5 to M20

Installation note:
The output shaft and drive flange may be inserted in the same procedure.







Tighten collar nut (1), activate parking brake for this purpose.
Tightening torque 33 41 1AZ.

Installation note:
No oil permitted on thread of shaft journal or collar nut.
Replace collar nut (1) by positive peening at flat areas of output shaft.