Operator`s manual

OPERATION
344
Downhill Operation
DO NOT exceed engine manufacturer's recommended
maximum engine speed. Engine damage can occur. If
equipped with an engine or exhaust brake, DO NOT
exceed 2300 rpm.
On a downgrade, do not coast with the clutch pedal depressed or the
transmission in neutral. Select a gear that does not allow the engine
speed to exceed the engine manufacturer's maximum engine speed
recommendation. Use the engine or exhaust brake and/or the service
brakes to control the vehicle speed. A simple rule is to select the same
gear used to go up the grade.
High Altitude Operation
Engines lose power when operated at high altitude because the air is
too thin to allow burning as much fuel as at sea level. Closely monitor
the gauges during high altitude operation. The thinner ambient air
reduces the efficiency of the engine cooling system. Engine overheat
or cylinder damage could occur if the engine is operated at full load for
extended periods at high altitudes in hot weather. Downshift and
reduce vehicle speed to reduce engine load when driving on long
grades in these conditions. This will help keep engine air intake
manifold and coolant temperatures within safe limits.
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