Crankshaft locking arrangement

The engine has a locking device (2) that is brought into engagement with a crankshaft during the leakage of the engine. The device has contact and holding units (3, 4), in which the contact unit is attached to the holding unit in a movable manner, such that the contact unit is connected with an opposite contact unit during last revolution of the crankshaft, and the crankshaft in its rest position is adjusted to a preset position.