Kenworth T410, Driver'S Handbook Manual

Page: 216 / 418

Page 190 CAT: 8612 November 2019
OPERATING INSTRUCTIONS
Establishing Optimum Operating Temperatures:
• Climb an uphill grade at maximum operating rpm and full throttle
for one minute. Record the pyrometer reading at the end of this
time interval, then ease up on the throttle.
• Subtract 110°C from the recorded temperature reading. This is
your maximum (and optimum) operating temperature.
Use the above method if there is no label on the pyrometer specifying the
maximum temperature, and as an occasional check on engine condition.
Any large variation in the maximum temperature reading may be an early
indication of possible engine trouble.
Different size injectors, or changes in altitude, may affect engine operating
temperatures. Turning off the engine while there are high pyrometer
temperatures may damage turbo bearings.
Accelerating
The practice of rapidly accelerating a loaded vehicle from a standstill can
cause severe damage to the drive shaft, transmission and rear axle.
Normal service life of these components can be greatly extended by gradual
and smooth acceleration.
If the driver were to unnecessarily accelerate a fully loaded vehicle with
full throttle in the lower gears, the resulting propeller shaft and axle shaft
torques would be tremendous. This would certainly cause greatly reduced
service life of all drivetrain components.”
It is possible to start any legal load smoothly without creating excessive
strain on the driveline components. ALWAYS ACCELERATE THE
VEHICLE GRADUALLY AND SMOOTHLY, especially when in lower gears.
Propeller Shaft Torque
9,729 Nm
Engine Crankshaft Torque
1,224 Nm
Axle Shaft Torque
36,720 Nm