BMW X3 Service & Repair Manual: Replacing radial shaft seal for input flange of rear axle differential

BMW X3 Service & Repair Manual / Driveline+Axles / Final drive with cover / Replacing radial shaft seal for input flange of rear axle differential

Special tools required:

  • 33 5 050
  • 33 5 070
  • 33 5 060
  • 00 5 010
  • 33 5 080
  • 33 0 150

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 AT FINAL DRIVE .

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

Driveline+Axles

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

Driveline+Axles

Release flange nut anticlockwise 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 .

Driveline+Axles

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

Driveline+Axles

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 .

Driveline+Axles

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

Driveline+Axles

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 flange nut with "Drei Bond adhesive type 1385".

Driveline+Axles

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).

Driveline+Axles

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

Introduce retaining clip (1).

Driveline+Axles

After installation:

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