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Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1843 (Transfer Case - Repair) >> 21 Transmission Shafts >> 27 21 010 Replacing Radial Shaft Seal For Drive Flange (ATC 300)

27 21 010 Replacing Radial Shaft Seal For Drive Flange (ATC 300)

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Special tools required: 

IMPORTANT: After completion of work, check gear oil level and top up if necessary.
Use only approved gear oil in this transfer box. See TRANSFER CASE - OPERATING FLUIDS .

Necessary preliminary tasks: 

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: Identifying Radial Shaft Seal And Center Punch
G04745123Courtesy 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: Identifying Radial Shaft Seal And Impact Weight
G04745124Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

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

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

Fig 3: Identifying Special Tool (27 1 430)
G04745125Courtesy of BMW OF NORTH AMERICA, INC.

Add final details to vehicle.

Check oil level.

Check transmission for leaks.