The bedplate consists of high, welded longitudinal girders and welded crossgirders with cast steel bearing supports. For four- and five-cylinder engines the chain drive is placed between the aftermost cylinder and the built-in thrust bearing. For the six-to twelve-cylinder engines chain drive is placed at the assembling between the fore and aft part. For production reasons, the bedplate can be made in convenient sections. The aft part contains the thrust bearing. The bedplate made for long, elastic holding-down bolts tightened by hydraulic tool.