Operator`s manual

OPERATION
343
When the idle shutdown feature is enabled, the engine will typically
shut down at the set time under the following conditions:
앫 Vehicle speed is 0.
앫 Engine is running at idle speed.
앫 Coolant temperature is above 45°C (113°F).
앫 Parking brake is applied (Volvo engines only).
These are standard choices when the vehicle is delivered. For more
information about other customer adaptation choices, contact your
authorized Volvo Truck dealer.
Uphill Operation
For best performance, allow engine speed to reach the bottom of the
rated torque range before downshifting. Continue to downshift in this
manner until a gear is reached that will maintain the desired speed.
Continue to operate at the rated torque if the vehicle will make it to the
top without a downshift. Begin upshifting as the grade of the hill
decreases and the engine begins to accelerate above 1600 rpm.
Driving this way will give the best fuel economy and performance.
Allowing the engine to lug down to the end of
maximum torque range is permissible if the vehicle is
cresting the top of a hill. However, extended operation
at engine speeds below the maximum torque range
(usually 1000 to 1200 rpm) will raise exhaust
temperature and cylinder pressure. This can lead to
reduced engine life.
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