Allis Chalmers produced its HD15 farm tractor model From 1951 Until 1955 in United states with a Open operator station cabin and more than 3,909 units were build. Talking dimensions and weight, this model weighs 27850 lbs or 12632 kg has 96.75 inches [245 cm] of width, 181 inches [459 cm] of length and 95 inches [241 cm] of height and a ground clearance of 14.375 inches [36 cm] the front tread is about 74 inches while the rear tread is 74 inches . This tractor can fit ag tires of 20-inch tracks front and 20-inch tracks back . This Allis Chalmers HD15 is powerd by a diesel engine it has 426 ci or 7.0 L 6 cylinders the fuel tank capacity is 91.5 gal or 346.3 L. This machine has crawler wheel drive system,6 forward and 3 reverse constant mesh transmission system.