11 14 141 Replacing radial shaft seal in lower timing case cover (N74)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2016 BMW 760Li, 2015 BMW 760Li, 2014 BMW 760Li, 2013 BMW 760Li, and 2012 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Removing 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.

NOTE: Illustrations show N62.

Fig 1: Positioning Levers Horizontally

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Fig 2: Identifying Radial Shaft Seal Levers And Spindle Of Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

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.

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

Fig 3: Identifying Radial Shaft Seal And Support Sleeve

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 4: Identifying Radial Shaft Seal On Lower Gear Case Cover

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 5: Identifying Special Tool 11 9 420 And Central Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.