11 14 151 Replacing radial crankshaft seal on transmission side (N54) (up to production date 12/31/2008)

Special tools required:

Necessary preliminary tasks:

Remove TRANSMISSION .
Remove FLYWHEEL .

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

Fig 1: Locating Crankshaft Radial Seal Removal Openings

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Identifying Rubber Coating And Removal Opening

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

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

Fig 3: Fitting Special Tool (11 9 200)

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

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

Fig 5: Identifying Radial Seal, Bushings And Groove

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

NOTE: The required parts are obtainable via BMW.

Remove sealing 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 Injector, Sealing Compound And Bottle

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Fit support bush (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 bush (4).

Fig 7: Identifying Radial Seal, Groove Housing Partition And Bush

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

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

Fit spacer ring (1) on preassembled radial shaft seal.

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 Tool (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: Coating Sealing Compound Surface Using Loctite Primer

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 Sealing Compound Surface Using Loctite Primer

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.