Rear Crankshaft Main Bearing Seal: Service and Repair

11 14 151 Replacing Radial Crankshaft Seal On Transmission Side (N55)

Special tools required:







Necessary preliminary tasks:
- Remove flywheel







IMPORTANT:
Magnet wheel (1) is magnetic.
Keep magnet wheel (1) in a plastic bag away from swarf.

Remove magnet wheel (1) from crankshaft.







Release screw on pulse sensor (1).
Slide pulse sensor (2) upwards.







IMPORTANT:
Drill size maximum 2.5 millimeters.
Remove swarf immediately.

Drill a hole with a drill (1) in the radial shaft seal (see arrow).







IMPORTANT: Immediately carefully remove swarf on the radial shaft seal (1).







Screw in special tool 23 0 490 in direction of arrow.
Drive out radial shaft seal with impact weight in direction of arrow.

IMPORTANT: Immediately carefully remove residual swarf.







Prepare radial shaft seal (1) on special tool 11 8 220.







Position the radial shaft seal (1) with special tool 11 8 220 on the crankshaft.







Brush radial shaft seal (1) over the special tool 11 8 220.
Move radial shaft seal (1) parallel up against the crankcase.







Fasten special tool 11 9 182 with special tool 11 9 184 on the crankshaft.







Installation note:
Prepare special tool 11 9 181 for installation.
Connect special tool 11 9 185 onto special tool 11 9 181.







Pull on radial shaft seal with special tools 119 181 and 11 9 185 in combination with special tool 11 9 183.







Screw on radial shaft seal with special tool 11 9 183 to limit position.







Remove all special tools.
Assemble engine.