English to Serbian Tech/Engineering Mechanics / Mech Engineering working device

During work of machines equipped with more working devices, the working device not used must be in a transportation position and mechanically secured.
When loading material onto transportation vehicles, it is allowed to manipulate a working device of a machine only above the loading area to avoid striking the transportation vehicle. If it is necessary in loading to manipulate a working device of a machine above the driver’s cabin of a transportation vehicle, no workmen must stay in it. The loading area must be loaded evenly.