Front Crankshaft Seal: Service and Repair

11 14 141 Replacing Radial Seal In Lower Timing Case Cover

Special tools required
- 11 2 380
- 11 2 383
- 11 2 385
- 11 3 280

Note:
This repair instruction is valid for the following engines:
- M50 / M52 / M52TU / M54 / M56
- S52

Remove vibration damper

Note: Version where vibration damper and hub are two parts.

Remove hub for vibration damper.






Fit special tool 11 2 383 to crankshaft.






Fit special tool 11 2 385 to crankshaft.
Align groove of special tool 11 2 385 to feather key of crankshaft.

Note: Special tool 11 2 385 centered special tool 11 2 380.






Screw in special tool 11 2 380 until it has made firm contact with radial seal.
Remove radial seal by tightening screw on special tool.






Installation:
Coat sealing lips of new radial sealing ring with oil.
Using special tool 11 3 280 and centering screw, install new radial seal flush with timing case cover.