Operator`s manual

INSTRUMENTS AND CONTROLS
76
Coolant Temperature Gauge
The coolant temperature gauge indicates engine coolant temperature.
The normal operating temperature for Volvo engines is 80 to 105°C
(170 to 215°F). Under normal driving conditions, the temperature must
be below the red sector.
The temperature range for the coolant will vary depending on the type
of engine, load, grade, ambient air temperature and operating
conditions. If the temperature remains below or exceeds the normal
temperature range, the cooling system should be checked for problems
by an authorized Volvo Truck dealer.
The temperature limit is dependent on the electronic program for the
engine model. When coolant temperature is excessive, the red STOP
tell-tale will come on and the buzzer will sound. The engine is at risk
and the EECU may derate the engine power. Stop at the first safe
place where the problem can be checked.
Stop Tell-Tale
If the coolant temperature returns to normal shortly
after exceeding the limit and no repair is performed,
the warning messages go out, but a fault message will
be logged.
vn-vhd.bk Page 76 Tuesday, July 1, 2008 9:44 AM