11 14 141 Replacing radial shaft seal in lower timing case cover (N63)

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required

Necessary preliminary tasks:

Remove VIBRATION DAMPER

Position all levers (2) horizontally to pull off radial shaft seal (1).

Turn back spindle of special tool 11 9 410 until all levers (2) can be positioned on sealing lip.

Fig 1: Positioning Levers On Sealing Lip Using Special Tool (11 9 410)

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Turn all levers (2) so that they grip behind radial shaft seal (1).

Turn spindle (3) on special tool 11 9 410 to remove radial shaft seal (1).

Fig 2: Removing Radial Shaft Seal Using Special Tool (11 9 410)

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NOTE: Radial shaft seal (1) may only be supported with "support sleeve" (2).

If the radial shaft seal (1) is stored for more than six months without the support sleeve (2), its operational reliability will no longer be guaranteed.

Radial shaft seal (1) must not be reused in this case!

IMPORTANT: The sealing lip of the radial shaft seal (1) is highly sensitive and must not be kinked under any circumstances.
Do not touch the sealing lip with your fingers.

Fig 3: Identifying Radial Shaft Seal And Support Sleeve

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Remove support sleeve (2) from radial shaft seal (1).

Fit radial shaft seal (1) on lower gear case cover.

Fig 4: Identifying Radial Shaft Seal

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Using special tool 11 9 420 and central bolt (3), screw radial shaft seal into lower gear case cover until flush.

Fig 5: Attaching Radial Shaft Seal Into Lower Gear Case Cover Using Special Tool (11 9 420) And Central Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.