11 14 151 Replacing crankshaft radial seal (transmission side)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW X5, 2006 BMW X3, 2005 BMW X5, 2005 BMW X3, and 2004 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: This repair instruction is valid for the following engines:

M40 / M42 / M43 / M43TU / M44
M50/M52/M52TU/M54/M56
S52 / S54

Necessary preliminary tasks:

Remove transmission.
Drain off engine oil.
Remove flywheel.

Unfasten oil sump screws on transmission end.

Fig 1: Unfastening Oil Sump Screws On Transmission End

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen oil pan.

Release screws in end cover at rear.

Fig 2: Releasing Screws In End Cover At Rear

Courtesy of BMW OF NORTH AMERICA, INC.

Carefully detach oil sump gasket from end cover, remove end cover.

NOTE: After removing end cover: check oil sump gasket for damage.
If necessary, remove oil sump and replace oil sump gasket.

NOTE: As from 4/98, a new type of radial seal is used in the Series and as a replacement. This radial seal may only be supported with a "support bushing".
If the radial seal is supported without the support bushing (1) for more than six months, operational reliability will no longer be assured and the radial seal must not be used any further.

Fig 3: Identifying Radial Seal

Courtesy of BMW OF NORTH AMERICA, INC.

Distinguishing feature:

New version "without hose spring"
Old version "with hose spring"

Fig 4: Identifying Sealing Lip Versions

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: The sealing lip of the new version (1) is very sensitive and must not be kinked under any circumstances. Do not touch the sealing lip with your fingers.

NOTE: The end cover is offered in the kit with a radial seal.

If necessary, lift out the radial sealing ring and drive in new sealing ring using special tool 11 1 260 in conjunction with special tool 00 5 500.

Fig 5: Installing Radial Sealing Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Check dowel sleeves (1) for damage and correct installation position.

Fig 6: Checking Dowel Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

Replace seal (2).

Apply thin, uniform coat of Drei Bond 1209 sealing compound (refer to BMW Parts Service) to edges of joint on oil pan.

IMPORTANT: Do not use special tool 11 2 213 for the new radial seal version.

Fig 7: View Of Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: When fitting the end cover with radial seal on the crankshaft, it is only permitted to use the "support bushing (1)" as an installation tool.

Fig 8: Identifying Support Bushing

Courtesy of BMW OF NORTH AMERICA, INC.

Lubricate contact face of crankshaft.

IMPORTANT: Push on end cover with support bushing (1) straight and without tilting sideways.

NOTE: Screw threads (1) are coated with sealing compound.

Replace screws (1).

Fig 9: Locating Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Insert all screws and tighten down end cover.

NOTE: Keep the support bushing (1) of the new radial seal version as a "special tool", then render the special tool 11 2 213 unusable and dispose of it.

The old and new radial seal versions can be installed with the support bushing (1).

Fig 10: View Of Support Bushing

Courtesy of BMW OF NORTH AMERICA, INC.