Hercules HXD

All standardized models used Hercules HXD engines, a855 cu in (14.0 L)  displacement L-head inline 6 cylinder gasoline engine developing 202 hp (151 kW) at 2100 rpm and 642 lbf⋅ft (870 N⋅m) of torque at 900 rpm. A Fuller 4-speed manual non-synchronized transmission with a very low 1st and direct 4th gear was used. A Timken transfer case had a high and low range, a neutral for Power take-off (PTO) operation, and engaged the front axle. Rear axles were Timken double reduction “pumpkin” type; tractors had heavier rear axles. It is designed and built by Royal Company Heavy Industries.