11 14 151 Replacing Crankshaft Radial Seal (S85)

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2010 BMW M6, 2010 BMW M5, 2009 BMW M6, 2009 BMW M5, and 2008 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 5 311
11 5 312
11 5 313
23 0 490

IMPORTANT: A radial shaft seal is damaged if it is supplied without a support bushing.
The sealing lip of the radial shaft seal is highly sensitive and must not be kinked.
Do not touch the sealing lip with your fingers.
The functional reliability of the radial shaft seal is no longer guaranteed and it must not be fitted.

Necessary preliminary tasks:

Remove transmission. See REMOVING AND INSTALLING TRANSMISSION (M5) or REMOVING AND INSTALLING TRANSMISSION (M6) .
Remove clutch. See REMOVING AND INSTALLING/REPLACING CLUTCH (M5) or REMOVING AND INSTALLING/REPLACING CLUTCH (M6) .
Remove flywheel .

Drill a 3 mm hole into radial shaft seal.

IMPORTANT: Risk of damage! Remove drilling chips immediately

Screw in special tool 23 0 490.

Drive out radial shaft seal with impact weight.

Fig 1: Screwing In Special Tool 23 0 490

G04741566

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage! Remove drilling chips immediately

Remove remnants of sealant from sealant outlet (1) on left and right.

Apply Drei Bond sealant 1209 to sealant outlet (1) on left and right.

Fig 2: Identifying Sealant Outlet

G04741567

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Pay attention to adapter sleeve.
Special tool 11 5 311 must rest flat on crankshaft (pay attention to adapter sleeve).

Mount special tool 11 5 311 with bolts (1).

Fig 3: Identifying Special Tool 11 5 311

G04741568

Courtesy of BMW OF NORTH AMERICA, INC.

Position support ring (1) with radial shaft seal (2) on special tool 11 5 311.

Push radial shaft seal (2) uniformly in direction of arrow over support ring onto special tool 11 5 311.

Fig 4: Pushing Radial Shaft Seal Over Support Ring Onto Special Tool 11 5 311

G04741569

Courtesy of BMW OF NORTH AMERICA, INC.

Position radial shaft seal (1) approx. 5 mm before crankcase.

Remove support ring (2).

NOTE: Support ring (2) is no longer needed.

Fig 5: Identifying Radial Shaft Seal Position And Support Ring

G04741570

Courtesy of BMW OF NORTH AMERICA, INC.

Press in radial shaft seal (1) with special tools 11 5 312 and 11 5 313.

Fig 6: Identifying Radial Shaft Seal, Special Tools 11 5 312 And 11 5 313

G04741571

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Settling time of radial shaft seal approx. 1 hour.

Correct engine oil level if necessary.