Procedures

33 21 ... Pressing Output Shaft Out Of Drive Flange And Drawing In







Necessary preliminary work:
- Remove rear wheel.
- Remove rear axle final drive.







IMPORTANT: Always place a new circlip on the output shaft reinstalling.







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:
Lightly oil gearing on shaft journal.
No oil permitted on thread of shaft journal or collar nut.
Renew collar nut (1) and secure 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

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/swivel bearing

Required components for all models and types:
1 Hydraulic unit
E3 Washer M24
F3 Spindle M24 (length 270 mm)
C1 Holding sleeve
K1 Screws M12 x 1.5
K2 Screws M14 x 1.5
B1 Adapter







- Secure output shaft against falling out.
- Press out output shaft with hydraulic unit.


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/swivel bearing
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):
G1 Adapter M22 x 1.5 to M20
G2 Adapter M24 x 1.5 to M20
G3 Adapter M27 x 1.5 to M20







Draw in output shaft with hydraulic unit.
Tighten collar nut (1), activate parking brake for this purpose.
Tightening torque 33 41 1AZ.

Installation note:
Renew collar nut (1), apply a light coating of oil to collar nut contact surface and tighten.
No oil permitted on thread of shaft journal or collar nut.
Secure collar nut (1) by positive peening at flat areas of output shaft.