Crankcase Mechanical system General When engine 651 was developed, the design of the crankcase was based on an overall concept with opti mized spatial features. Accordingly, the gear drive with the oil pump drive and the Lanchester balance shafts are positioned on the output side. The cast iron crankcase is manufactured by sand casting. The new design concept provides the following advan tages:
4 cm shorter crankcase compared to predecessor version Improved pedestrian protection through positioning of gear drive and camshaft drive on output side Universal timing case cover for adaptation to various transmission models Crankcase 1 Crankcase 2 Oil spray nozzle shutoff valve 12 Introduction of New Generation of 4-Cylinder Inline Engines, OM 651 q – This printout will not be recorded by the update service. Status: 09 / 2008 –