Sheppard Diesel produced its SD-3 farm tractor model From 1949 Until 1956 in United states with a Open operator station cabin and more than 1441 units were build. Talking dimensions and weight, this model weighs 4196 lbs or 1903 kg has , 131 inches [332 cm] of length and 70.25 inches [178 cm] of height while maintaining a wheelbase of 92 inches [233 cm] the front tread is about 56 to 80 inches while the rear tread is 54 to 82 inches . This tractor can fit ag tires of 6.00-16 front and 6.00-16 back . This Sheppard Diesel SD-3 is powerd by a diesel engine it has 212.8 ci or 3.5 L 3 cylinders ,it can produce 32 hp or 23.9 kW at 1650 (rpm),. This machine has 4x2 2WD wheel drive system,8 forward and 2 reverse transmission system.