Operate the vehicle in a gear that produces a road speed of 90 to 95 km/h [56 to 59 mph].
Operate the engine at 1200 rpm and 25 percent of torque peak load until the water temperature reaches 70ยฐC [158ยฐ
F].
Operate the engine at 1200 rpm and 40 percent of torque peak load for 2 minutes. Check the gauges, and record
the readings.
Operate the engine at 1600 rpm and 65 percent of torque peak load for 5 minutes. Check the gauges, and record
the readings.
Operate the engine at torque peak rpm and full load for 4 minutes. Check the gauges and record the readings.
NOTE: Refer to the engine data sheet for the torque peak rpm of the engine model being tested.
Operate the engine at rated speed (rpm) and full load for 4 minutes. Check the gauges, and record the readings.
Compare the readings to those published on the appropriate engine data sheet.
Make sure all instrumentation is removed before removing the vehicle from the dynamometer.
