27 21 030 Replacing radial shaft seal for front axle output (ATC 700)

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Special tools required:

23 0 490
27 1 470

IMPORTANT: After completion of work, check transmission oil level .
Use only the approved oil in this transfer box. See TRANSFER CASE - OPERATING FLUIDS .

Necessary preliminary tasks:

Remove front PROPELLER SHAFT .

Remove protective cap (1) with a screwdriver.

Fig 1: Removing Protective Cap Using Screwdriver

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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 shavings from drilling may result in transmission malfunction.

Fig 2: Driving Hole Into Radial Shaft Seal Using Centre Punch

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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: Driving Out Radial Shaft Seal Using Impact Weight

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Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 4: Driving In Radial Shaft Seal Using Special Tool 27 1 470

G04794271

Courtesy of BMW OF NORTH AMERICA, INC.

Add final details to vehicle.

Check oil level.

Check transmission for leaks.