27 21 010 Replacing radial shaft seal for drive flange (ATC 450)

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Special tools required:

23 0 490
27 1 430

IMPORTANT: After completion of work, CHECK TRANSMISSION OIL LEVEL and top up if necessary.
For this transfer box, use approved TRANSMISSION OIL only.

Necessary preliminary tasks:

Remove TRANSFER BOX .

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

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

Fig 1: Drilling Hole Into Radial Shaft Seal

G04745123

Courtesy of BMW OF NORTH AMERICA, INC.

Screw special tool 23 0 490 into radial shaft seal.

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

Fig 2: Pulling Out Radial Shaft Seal

G04745124

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Coat sealing lips of new radial shaft seal with clean transmission oil.

Drive in radial shaft seal with special tool 27 1 430 .

Fig 3: Installing Radial Shaft Seal With Special Tool (27 1 430)

G04745125

Courtesy of BMW OF NORTH AMERICA, INC.

Reassemble the vehicle.

Check oil level.

Check transmission for leaks.