33 21 000 Removing and Installing/Replacing Left or Right Output Shaft (on 2-Flow Exhaust System)

33 21 000 Removing and installing/replacing left or right output shaft (on 2-flow exhaust system)





Remove rear wheel.

Important!
Expand anti-twist lock sufficiently to avoid damaging thread when releasing collar nut.

Release collar nut (1), activate hand brake for this purpose.

Installation:
Replace collar nut, oil collar nut/wheel bearing contact surface only and tighten down.

No oil permitted on thread of shaft journal or collar nut.

Tightening torque 33 41 1AZ.

Secure collar nut by positive peening on flat areas of output shaft.

E91, E93: Remove trailing link (on rear axle).

Except M3: Lower exhaust system in rear area.





M3: Remove final muffler.





Release bolts and remove with washers (1).

Press output shaft off drive flange using a suitable tool; if necessary, raise wheel carrier with workshop jack approx. 20 mm.

Installation:
Before installing output shaft, make sure that drive flange is fully engaged in rear differential.

Replace bolts and washers (1).

Tightening torque 33 21 1AZ.





Press output shaft out of drive flange and remove towards center of vehicle.





After installation:
^ Check that output shaft is correctly seated in rear differential.

Applies to four-wheel drive only:

Replacement only:
^ With BMW Diagnosis and Information System under:
- Control-module functions
Perform functional check of transfer box (calibration)