Ford F750 Owner's Manual page 89

Hot weather operation
• Keep the engine cooling system filled with a clean, permanent coolant
solution to protect against damage from overheating.
• Fill the fuel tank at the end of daily operation to prevent condensation
in the fuel system.
• Keep external surfaces of the engine, radiator, charge air cooler, A/C
condenser and accessories clean to avoid dirt build-up.
Above normal coolant temperatures could be experienced while driving
in a transmission gear ratio which lugs the engine. To correct this
problem, engine speed should be increased by downshifting in to the
next lower gear to increase engine RPM.
Starting a turbocharged engine with the vehicle on a steep grade
When starting a naturally aspirated Diesel engine when the loaded
vehicle is on a grade, the engine RPM will start to fall slightly when the
clutch is engaged, but quickly recovers as the vehicle begins moving.
Turbocharged Diesel engines act differently; once the clutch is engaged,
the engine RPM will fall significantly. When the engine RPM first falls, do
not disengage the clutch and try to increase engine RPM as this may
damage driveline components. After the initial drop in engine RPM, the
engine will recover by itself and accelerate in a normal manner.
GENERAL OPERATING INSTRUCTIONS
• Start the vehicle in motion by using the highest gear speed in the
transmission that will let the engine easily start the load without
slipping the clutch.
• Accelerate smoothly and evenly; rapid acceleration increases fuel
consumption without increasing engine performance.
• When approaching a hill, depress the accelerator smoothly to start the
incline at full power, then shift down as needed to maintain vehicle
speed.
• When going down a hill, or long steep grades, prevent over-speeding
of the engine. The engine governor has no control over engine speed
when it is being pushed by a loaded vehicle.
2004 F650/750 (f67)
Supplement
USA English (fus)
Driving
89