www.changlin.com.cn Engine Operating Range Cummins engines are designed to operate successfully at full throttle under transient conditions down to peak torque engine speed (RPM). This is consistent with recommended driving practices for good fuel economy. Caution: Excessive full throttle operation below peak torque RPM (peak torque RPM varies from 1, 100 RPM to 1,500 RPM, depending upon rated engine speed) will shorten engine life to overhaul, can cause serious engine damage, and is considered engine abuse. Caution:
Operation of the engine below peak torque RPM can occur during gear shifting due to the difference of ratios between transmission gears, but engine operation must not be sustained more than one minute at full throttle below peak torque RPM. Caution: Operating the engine beyond high idle speed can cause severe engine damage. When descending a steep grade, use a combination of transmission gears and engine or service brakes to control the vehicle and engine speed. Engine Shut‐down Procedure Allow the engine to idle 3 to 5 minutes after a full load operation before shutting the engine off. This allows the engine to cool gradually and uniformly Turn the ignition key switch to the OFF position.
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