11 14 151 Replacing Crankshaft Radial Seal

11 14 151 Replacing crankshaft radial seal (N54, N54T)

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.








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





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.

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.





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.

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 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.





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).

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.








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.





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.

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








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.





Assemble engine.