Rear Crankshaft Main Bearing Seal: Service and Repair
11 14 151 - Replacing crankshaft radial seal (S85)
Special tools required:
- 11 5 311 11 5 310 Installer
- 11 5 312 11 5 310 Installer
- 11 5 313 11 5 310 Installer
- 23 0 490 23 0 490 Extractor
Important!
A radial shaft seal is damaged if it is supplied without a support bushing.
The sealing lip of the radial shaft seal is highly sensitive and 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 transmission Removing and Installing Transmission (GS7S47BG SMG).
- Remove clutch 7 Speed.
- Remove flywheel Removing and Installing / Replacing Flywheel (S85 7-Speed SMG).
Drill a 3 mm hole into radial shaft seal.
Important!
Risk of damage! Remove drilling chips immediately
Screw in special tool 23 0 490 23 0 490 Extractor.
Drive out radial shaft seal with impact weight.
Important!
Risk of damage! Remove drilling chips immediately
Remove remnants of sealant from sealant outlet (1) on left and right.
Apply Drei Bond sealant 1209 refer to Electronic Parts Catalogue) to sealant outlet (1) on left and right.
Important!
Pay attention to adapter sleeve.
Special tool 11 5 311 11 5 310 Installer must rest flat on crankshaft (pay attention to adapter sleeve).
Mount special tool 11 5 311 11 5 310 Installer with bolts (1).
Position support ring (1) with radial shaft seal (2) on special tool 11 5 311 11 5 310 Installer.
Push radial shaft seal (2) uniformly in direction of arrow over support ring onto special tool 11 5 311 11 5 310 Installer.
Position radial shaft seal (1) approx. 5 mm before crankcase.
Remove support ring (2).
Note:
Support ring (2) is no longer needed.
Press in radial shaft seal (1) with special tools 11 5 312 11 5 310 Installer and 11 5 313 11 5 310 Installer.
Assemble engine.
Settling time of radial shaft seal approx. 1 hour.
Correct engine oil level Engine Oil Service if necessary.