27 21 010 Replacing radial shaft seal for drive flange (ATC 400/500 X-Drive)

WARNING: This page is about a different car, the 2010 BMW X3, 2009 BMW X3, 2008 BMW X3, and 2007 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

IMPORTANT: After completion of work, check gear oil level and top up if necessary, see 00 11 572 CHANGING OIL IN TRANSFER BOX (ATC 400/500) and top up if necessary.
Use only approved gear oil in this transfer box.

Necessary preliminary tasks:

Remove transfer box, see 27 10 010 Removing and installing transfer case (ATC 400 X-Drive) .

Drive a hole into radial shaft seal (2) using a center punch (1).

IMPORTANT: Do not use a drill as drillings may result in transmission malfunction.

NOTE: Illustration shows NV125 transmission

Fig 1: Driving A Hole Into Radial Shaft Seal

G04787534

Courtesy of BMW OF NORTH AMERICA, INC.

Screw in special tool 23 0 490.

Drive out radial shaft seal (1) with impact weight (2).

NOTE: Illustration shows NV125 transmission

Fig 2: Driving Out Radial Shaft Seal With Impact Weight

G04787535

Courtesy of BMW OF NORTH AMERICA, INC.

Drive in radial shaft seal with special tool 27 1 390.

Fig 3: Driving In Radial Shaft Seal With Special Tool

G04787536

Courtesy of BMW OF NORTH AMERICA, INC.

Add final details to vehicle.

Check oil level.

Check transmission for leaks.