33 11 021 Replacing radial shaft seal for drive flange on rear axle final drive

WARNING: This page is about a different car, the 2016 BMW Z4, 2015 BMW Z4, and 2014 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 5 010
33 0 150
33 5 050
33 5 060
33 5 070

IMPORTANT:

Use only approved gearbox OILS .

Failure to comply with this instruction will result in serious damage to the rear axle final drive!

Necessary preliminary tasks:

Remove PROPELLER SHAFT

Remove retaining clip (1) and insert nut (2) with diaphragm seal.

Fig 1: Identifying Insert Nut And Retaining Clip

Courtesy of BMW OF NORTH AMERICA, INC.

Mark position of flange nut (1) to bevel pinion (2).

Fig 2: Identifying Bevel Pinion Flange Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Heat up flange nut using a hot air blower.

NOTE: Do not heat beyond the dimension required to open the nut! Do not use a naked flame (e.g. welding torch) for heating!

Release flange nut counterclockwise with special tools 33 5 050 and 33 5 070 by gripping the bevel pinion with special tools 33 5 060 and 33 5 070 .

Fig 3: Removing Flange Nut Using Special Tools (33 5 050) And (33 5 070)

Courtesy of BMW OF NORTH AMERICA, INC.

Pull out radial shaft seal with special tool 00 5 010 .

Fig 4: Pulling Out Radial Shaft Seal Using Special Tool (00 5 010)

Courtesy of BMW OF NORTH AMERICA, INC.

Coat sealing lips of new radial shaft seal and sealing surface of bevel pinion with final drive oil.

Drive in radial shaft seal with special tool 33 0 150 .

Fig 5: Installing Radial Shaft Seal Using Special Tool (33 0 150)

Courtesy of BMW OF NORTH AMERICA, INC.

Clean bevel pinion thoroughly to remove remnants of screw locking agent.

Fig 6: Identifying Bevel Pinion

Courtesy of BMW OF NORTH AMERICA, INC.

Check dust plate for damage, replace if necessary.

IMPORTANT:

Clean flange nut thoroughly to remove remnants of grease and screw locking agent.

Pack collar insert (1) of flange nut with GREASE .

Apply a thin coating of GREASE to shaded area (2) of flange nut.

Coat at least four thread turns of the flange nut with "Drei Bond adhesive type 1385".

Fig 7: Identifying Collar Insert And Flange Nut Shaded Area

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: In order to avoid damaging the rear axle final drive, do not under any circumstances tighten down the flange nut (1) beyond the marker point of the bevel pinion (2).

Fig 8: Identifying Bevel Pinion Flange Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Place insert nut (2) with diaphragm seal in flange nut.

Introduce retaining clip (1).

Fig 9: Identifying Insert Nut And Retaining Clip

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Check OIL LEVEL IN REAR AXLE DIFFERENTIAL and top up, if necessary.