Monitoring the Engine Speed

Monitoring the Engine Speed - Gen 5 DD15 - Ops - #7628

During operation of the vehicle, the operator should limit the engine speed to 1900 rpm or less. No extra engine power is achieved at engine speeds above 1900 rpm. Shifting gears without pressing the clutch, or using the engine brakes to reduce engine speed, may result in serious powertrain damage due to higher engine speeds. Never exceed 2000 rpm; higher engine speeds may result in extensive engine damage.

Notice: Any engine overspeed (engine speed exceeds 2500 rpm) while the vehicle is moving (vehicle speed over 0 MPH) is considered to be an operator-induced engine overspeed. Any mechanical engine failure within 2000 miles (3218 km) of an operator-induced engine overspeed event will not be eligible for warranty coverage.
Note:
Document Number: 0000009720
Manual Publication Date: 2024-01-03
Topic Publication Date: 2023-12-10