A machine unit, component piece and intermediate element, and method for connecting and/or disconnecting a connection line to/from a machine unit, wherein a region includes an intermediate element and a component piece is substantially enclosed between an electrical machine and a functional element of the machine element, where the component piece can be removed or folded away from the intermediate element, where after the component piece is removed from the intermediate element, the sheathed region is advantageously accessible for connection by way of a connection line, and where a transmitter, for example, is connectable via the connection line to permit connection of the connection line in the sheathed region without the functional element having to be removed such that an electrical machine that includes the functional element can also be serviced in locations that are difficult to access.