This formerly civilian Kaelble wheeled tractor is most probably a Z 4 GR. Because Kaelble produced only small series in manual labour the identification is difficult.
The Kaelble Z 4 GR wheeled-tractor was propelled by a four-cylinder diesel engine with a power of 65 HP. It differed from the similar Kaelble Z 6 G wheeled-tractor by the shorter engine bonned.
