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

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Remove rear wheel . See WHEEL AND TIRES - REPAIR .

IMPORTANT: Expand turning lock sufficiently to avoid damaging thread when releasing collar nut.

Release collar nut (1), activate handbrake 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 . See 33 41 WHEEL BEARINGS .

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

Fig 1: Identifying Collar Nut

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E91, E93: Remove tension strut (on rear axle) . See 51 71 482 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT TENSION STRUT (ON REAR AXLE)

Except M3: Lower exhaust system in rear area .

M3: Remove final muffler . See 18 12 030 REMOVING AND INSTALLING/REPLACING REAR MUFFLER (S65) .

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 . See 33 21 OUTPUT SHAFT .

Fig 2: Identifying Bolts And Washers

Courtesy of BMW OF NORTH AMERICA, INC.

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.