An articulated harvester is composed of a forward bogey having an operator's cab, an engine, a grain harvesting assembly, a grain transfer assembly, but being devoid of an on-board grain bin. A rearward bogey is attached by a joint to the forward bogey and has a powered wheel assembly, an on-board grain bin for receiving grain from the forward bogey grain transfer assembly, and a grain off-loading assembly. The grain separating and cleaning assembly including a grain cleaning fan are located in front of the forward bogey axle and offset from the forward bogey centerline. The forward bogey transmission may be located ahead of or behind the forward bogey axle and offset opposite of the grain fan.