33 11 021 Replacing radial shaft seal for drive flange on rear axle final drive (inserted propeller shaft)

WARNING: This page is about a different variant/trim than selected.

Special tools required:

IMPORTANT: Use only approved gearbox oils. See REAR AXLE - OPERATING FLUIDS .
Failure to comply with this instruction will result in serious damage to the rear axle final drive!

Necessary preliminary work

Remove PROPELLER SHAFT .

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

Fig 1: Identifying Diaphragm Seal Retaining Clip And Insert Nut

G09837998

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Identifying Bevel Pinion And Flange Nut

G09837999

Courtesy of BMW OF NORTH AMERICA, INC.

Release flange nut clockwise 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 Clockwise Using Special Tools

G09838000

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

G09838001

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 5 080 or 33 0 150 .

Fig 5: Driving Radial Shaft Seal Using Special Tool

G09838002

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 6: Identifying Remnants Of Screw Locking Agent

G09838003

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. See REAR AXLE - OPERATING FLUIDS .
Apply a thin coating of grease to shaded area (2) of flange nut.
Coat at least four thread turns of flange nut with "DREI BOND adhesive type 1385".

Fig 7: Identifying Grease Applying Area On Flange Nut

G09838004

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 Marker Point

G09838005

Courtesy of BMW OF NORTH AMERICA, INC.

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

Introduce retaining clip (1).

Fig 9: Identifying Diaphragm Seal Retaining Clip And Insert Nut

G09838006

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Correct oil level of rear axle final drive . See 0011... CHECKING/TOPPING UP OIL LEVEL IN REAR AXLE FINAL DRIVE .