27 21 030 Replacing radial shaft seal for output to the front axle (ATC 350)

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: After completion of work, CHECK TRANSMISSION OIL LEVEL .
Use only the APPROVED OIL in this transfer box.

Necessary preliminary tasks:

Remove rear UNDERBODY PROTECTION .
Remove left holder for underbody protection.
Remove exhaust system holder from transfer box.

Tightening torque 18 20 2AZ .

Release screws.

Tightening torque 26 11 7AZ.

Remove front propeller shaft at output flange of transfer box and tie to one side.

Installation note:

Replace screws.

Fig 1: Locating Front Propeller Shaft Output Flange Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Lever output flange (1) out of housing with screwdriver (2).

Lever radial shaft seal out of housing with a suitable tool.

IMPORTANT: Do not damage housing.

Fig 2: Removing Output Flange From Housing Using Screwdriver

Courtesy of BMW OF NORTH AMERICA, INC.

Drive in radial shaft seal with special tool 27 1 450.

Fig 3: Installing Radial Shaft Seal Using Special Tool (27 1 450)

Courtesy of BMW OF NORTH AMERICA, INC.