"... The Hitdorf machine, with two axles and a weight of 24 tons, is one of the relatively small steam storage locomotives for standard gauge operation. It is equipped with an internal engine: the two cylinders are located between the frame under the driver's cab, as are the two connecting rods for transmitting the power Power to the front wheels Externally mounted connecting rods connect the front and rear wheels.
The boiler is an important functional part of a steam storage locomotive. It consists of riveted steel plates and is surrounded by a thin sheet metal shell about two centimeters apart. A further, outer sheet metal casing followed over tire-shaped spacers. The insulation between these two sheet metal walls ensured the lowest possible heat loss from the steam stored in the boiler.
The filler neck for introducing the steam can still be seen on the front end of the boiler. The dome sits on the cauldron with its encasement. In front of the dome is the sandbox, from which the sand required for braking was fed through pipes in front of or behind the front wheels. The corresponding sandboxes for the rear wheels are arranged under the driver's cab.
The hand throw brake and the hand crank for regulating the steam supply to the cylinders have been preserved in the driver's cab. The instruments on the rear end of the boiler (four instruments after the connecting pieces) have not been preserved. ..."