Heavy Duty Dynamometer Test System provides precise speed and load simulation conditions on the test article. The Dynamometer Test System is installed above floor level with the gearboxes installed onto a main torque reaction frame. The Dynamometer Test System simulates full load conditions in the speed and power control modes based on the model under test. The Heavy Duty Dynamometer Test System monitors temperatures, pressures, accelerometers and operation of the gearbox oil pumps and fans.