 As was typical on all "Einheitslokomotiven", the engine had a Knorr feedwater preheater mounted transversely above the smokebox.The boiler was fed using "Friedmann" exhaust steam injectors.Because "Heberlein" brakes were still partially in use at that time, the locomotives also had, on delivery, the necessary equipment for them, complete with guide rollers and winders ("Haspel").