11 14 151 Replacing radial crankshaft seal on transmission side N54 N54Tby 31.12.08

WARNING: This page is about a different variant/trim than selected.

Special tools required:

Necessary preliminary tasks:

Remove transmission See 23 00 018 REMOVING AND INSTALLING TRANSMISSION (GS6-53BZ) N54 or 28 00 001 REMOVING AND INSTALLING TWIN-CLUTCH GEARBOX (GS7D36SG) N54 .
Remove FLYWHEEL .

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

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

Fig 1: Locating Radial Shaft Seal Removal Openings

Fig 2: Identifying Radial Shaft Seal Rubber Coating And Removal Opening

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: Locating Radial Shaft Removal Openings

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 Radial Shaft Seal Sealing And Running Surface

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 Shaft Seal, Grooves And Support Bush

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 available from the BMW Parts Department (Electronic Parts Catalogue).

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 Screw Caps And Injector

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 Shaft Seal, Groove, Housing Partition And Support Bush

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 preassembled radial shaft seal.

Fig 8: Installing Special Tool (11 9 182) With Crankshaft Using Screws

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)

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 Loctite Primer Brush Into Radial Shaft Seal Grooves

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

Fig 11: Flushing Radial Shaft Seal Grooves With Loctite Primer

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 Radial Shaft Seal Grooves With Loctite Primer

Assemble engine.