McCormick-Deering produced its WD-40 farm tractor model From 1935 Until 1940 in United states with a Open operator station cabin. Talking dimensions and weight, this model weighs 7,550 lbs or 3424 kg has 65.5 inches [166 cm] of width, 141.5 inches [359 cm] of length and 67 inches [170 cm] of height. This tractor can fit ag tires of 34x6 steel front and 34x6 steel back . This McCormick-Deering WD-40 is powerd by a diesel engine it has 460.7 ci or 7.6 L 4 cylinders 8 valves the fuel tank capacity is 31 gal or 117.3 L. This machine has 4x2 2WD wheel drive system,3 forward and 1 reverse transmission system.