... , unchanged valve arrangement. 3. The cylinder head, piston connecting rod mechanism, valve train, gear train, lubrication, cooling system, gearbox, flywheel, ... as those of the WD615/Euro2 engines. 5. A special balancing mechanism has been designed and is mounted on the bottom plane ... the crankcase to make the whole mechanism locate in the oil sump. Thus the mechanism will not affect the dimensions and ...