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

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IMPORTANT:

After completion of work, CHECK OIL LEVEL .

Use only the approved oil in this transfer box. See TRANSFER CASE - OPERATING FLUIDS .

Necessary preliminary work:

Remove TRANSFER BOX .

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 1: Driving Hole Into Radial Shaft Seal Using Centre Punch

G04745123

Courtesy of BMW OF NORTH AMERICA, INC.

Screw special tool 23 0 490 (puller) into radial shaft seal.

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

Fig 2: Driving Out Radial Shaft Seal With Impact Weight Using Special Tool

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: Driving In Radial Shaft Seal Using Special Tool (27 1 430)

G04745125

Courtesy of BMW OF NORTH AMERICA, INC.

Reassemble the vehicle.

Check OIL LEVEL .

Check transmission for leaks.