11 14 151 Replacing Crankshaft Radial Seal (N54) Up To 12-31-08

WARNING: This page is about a different car, the 2010 BMW 135i, 2009 BMW 135i, and 2008 BMW 135i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

For the following special tools, refer to ENGINE- SPECIAL TOOLS .

11 9 181
11 9 182
11 9 183
11 9 184
11 9 200

Necessary preliminary tasks:

Remove transmission . See 24 00 030 REMOVING AND INSTALLING AUTOMATIC TRANSMISSION (GA6HP19Z) N54 or 23 00 018 REMOVING AND INSTALLING TRANSMISSION (GS6-53BZ) N54 .
Remove flywheel . See 11 22 500 REMOVING AND INSTALLING/REPLACING FLYWHEEL (N54) .

NOTE: Radial seal has six removal openings for removal with special tool 11 9 200.

Fig 1: Locating Radial Seal Openings

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: If necessary, remove rubber coating (1) on top side of radial seal and expose a removal opening (2) (see Fig 2).

Fig 2: Identifying Rubber Coating And Removal Opening

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Fit special tool 11 9 200. Insert metal screws into removal opening of radial seal and initially tighten without play (do not overtighten metal screws).

Screw in spindle (1) slowly and carefully and detach radial seal.

Fig 3: Identifying Special Tool 11 9 200 And Spindle

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Clean sealing surface (1) and degrease thoroughly in area of housing partition.

Apply a light coat of oil to running surface (2) of radial shaft seal.

Fig 4: Identifying Sealing Surface And Running Surface Of Radial Shaft Seal

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Support sleeve (4) is supplied with radial shaft seal (1).
When radial shaft seal (1) is installed, only support sleeve (4) may be used as a slip sleeve.
Radial shaft seal (1) has a groove (2) on both left and right sides.

IMPORTANT: After installation, grooves (2) must be filled with sealing compound.

Fig 5: Identifying Radial Shaft Seal, Support Sleeve And Grooves

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: The seal between the engine block and radial seal is described below.
The engine block will not be leakproof at the outside of the radial seal if you fail to comply with the individual work steps and the work sequence.

NOTE: The required parts are available from the BMW Parts Service (ETK).

Remove screw caps (1) from injector (2).

Screw on metering needle.

Insert piston for pressing out.

Injector (2) contains the sealing compound Loctite, manufacturer's number 193140.

Bottle (3) contains the primer Loctite, manufacturer's number 171000.

Fig 6: Identifying Screw Caps And Injector

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Fit support sleeve (4) with radial shaft seal (1) on crankshaft.

Align groove (2) centrally to housing partition (3).

Coat both grooves (2) on radial shaft seal (1) with Loctite primer, manufacturer's number 171000, and expose to air for approx. one minute.

Push radial shaft seal (1) by hand as far as possible onto running surface.

Carefully remove support sleeve (4).

Fig 7: Identifying Support Sleeve, Radial Shaft Seal And Grooves

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Spacer ring (1) is supplied with radial shaft seal.

Screw special tool 11 9 182 with screws (special tool 11 9 184) to crankshaft.

Fit spacer ring (1) on pre-assembled radial shaft seal.

Fig 8: Identifying Special Tools 11 9 182 And 11 9 184

Courtesy of BMW OF NORTH AMERICA, INC.

Draw in radial shaft seal and spacer ring with special tool 11 9 181 in conjunction with special tool 11 9 183.

Then remove spacer ring again.

Fig 9: Identifying Special Tools 11 9 181 And 11 9 183

Courtesy of BMW OF NORTH AMERICA, INC.

Before filling with sealing compound:

Insert brush with Loctite primer, manufacturer's number 171000, as far as possible into grooves (1) on radial shaft seal and coat housing partition on engine block.

Fig 10: Inserting Brush With Loctite Primer Into Grooves On Radial Shaft Seal

Courtesy of BMW OF NORTH AMERICA, INC.

Fill both grooves (1) flush with Loctite sealing compound, manufacturer's number 193140.

Fig 11: Filling Both Grooves Flush With Loctite Sealing Compound

Courtesy of BMW OF NORTH AMERICA, INC.

Coat surface of sealing compound in both grooves (1) with Loctite primer, manufacturer's number 171000.

NOTE: Loctite primer, manufacturer's number 171000, binds the Loctite sealing compound, manufacturer's number 193140, and prevents leakage.

Fig 12: Coating Surface Of Sealing Compound In Both Grooves Using Loctite Primer

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.