Front Crankshaft Seal: Service and Repair

11 14 005 - Replacing front crankshaft radial seal (S85)





Special tools required:
- 11 2 386 11 2 380 Puller
- 11 5 331 11 5 330 Assembly Tool
- 11 5 332 11 5 330 Assembly Tool
- 11 5 333 11 5 330 Assembly Tool
- 11 6 360 11 6 360 Extractor
- 11 7 231 11 7 230 Slip Bush





Important!
A radial shaft seal is damaged if it is supplied without a support bushing.

Sealing lip of radial shaft seal is highly sensitive.

Sealing lip must not be kinked.

Do not touch the sealing lip with your fingers.

The functional reliability of the radial shaft seal is no longer guaranteed and it must not be fitted.





Necessary preliminary tasks:
- Remove fan cowl with electric fan.
- Remove vibration damper Service and Repair.
- Remove radiator.





Lay special tool 11 2 386 11 2 380 Puller on crankshaft.





Screw special tool 11 6 360 11 6 360 Extractor to 80 Nm into radial seal.

Release radial seal from housing.

Repeat the operation several times if necessary.

Note:
Carefully saw open old radial shaft seal with an iron saw from special tool 11 6 360 11 6 360 Extractor.





Remove remnants of sealant from sealant outlet (1) on left and right.

Apply Drei Bond sealant (refer to ETK) to sealant outlet (1) on left and right.





Secure special tool 11 5 331 11 5 330 Assembly Tool with bolts (1).

Important!
Pay attention to dowel pin.





Push special tool 11 7 231 11 7 230 Slip Bush onto special tool 11 5 331 11 5 330 Assembly Tool in direction of arrow.





Installation Note:
Remove support ring from radial shaft seal.

Important!
Sealing lip of radial shaft seal is highly sensitive.

Sealing lip must not be kinked.

Do not touch the sealing lip with your fingers.

Push radial shaft seal (1) uniformly by way of fitting aid 11 7 231 11 7 230 Slip Bush onto special tool 11 5 331 11 5 330 Assembly Tool.

Position radial shaft seal approx. 5 mm before crankcase.

Remove special tool 11 7 231 11 7 230 Slip Bush.





Press in radial shaft seal (1) with special tools 11 5 332 11 5 330 Assembly Tool and 11 5 333 11 5 330 Assembly Tool.





Assemble engine.

Setting time of radial shaft seal approx. 1 hour.

Correct Engine Oil Service engine oil level if necessary.