27 21 030 Replacing radial shaft seal for front axle output (ATC 450)

WARNING: This page is about a different car, the 2010 BMW X5, 2009 BMW X5, 2008 BMW X5, and 2007 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

23 0 490
27 1 470

IMPORTANT: After completion of the repair work, check gearbox oil level . For these transfer boxes, use approved transmission oil only. See TRANSFER CASE - OPERATING FLUIDS .

Necessary preliminary tasks:

Remove front propeller shaft. See 26 20 000 REMOVING AND INSTALLING FRONT PROPELLER SHAFT (N52K, M57T2, N54, N55, N57) .

Remove protective cap (1) with a screwdriver.

Fig 1: Remove Protective Cap (1) With A Screwdriver

G00497029

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Fig 2: Drive A Hole Into Radial Shaft Seal

G00497030

Courtesy of BMW OF NORTH AMERICA, INC.

Screw in special tool 23 0 490. Drive out radial shaft seal (1) with impact weight (2).

Fig 3: Drive Out Radial Shaft Seal (1) With Impact Weight

G00497031

Courtesy of BMW OF NORTH AMERICA, INC.

Drive in radial shaft seal with special tool 27 1 470.

Fig 4: Drive In Radial Shaft Seal With Special Tool 27 1 470

G00497032

Courtesy of BMW OF NORTH AMERICA, INC.

Reassemble the vehicle. Check oil level. Check transmission for leaks.