Analog Indicators - PREVOST X3-45 COACH 2018 Operator's Manual

ANALOG INDICATORS

TACHOMETER (RPM X 100)
Indicates the operating speed of the engine in hundreds of
revolutions per minute. The tachometer serves as a guide for
gear shifting and helps to prevent engine over-speeding when
driving downhill with the engine brake operating. Use the
green field for normal driving (1000 to 1600 rpm).
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Never allow the engine to go into the red field. This could
lead to severe engine damage.
SPEEDOMETER (MPH, KM/H)
Indicates the vehicle speed in miles per hour (mph) and
kilometers per hour (km/h). The LEDs above the instrument
work in conjunction with AWARE Adaptive Cruise Braking
(ACB) system. Refer to "Prevost AWARE Adaptive Cruise
Braking" paragraph.
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TURBO BOOST PRESSURE (PSI)
Indicates the turbo boost pressure in psi. This pressure should
be the same at a given engine temperature, speed, and load.
An unusual reading could indicate an engine failure.
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ENGINE COOLANT TEMPERATURE (°F)
Indicates the operating temperature of the engine coolant in °f.
The normal reading should be between 170°f and 222°f (80°c
to 106°c).
The temperature limit is dependent on the electronic program
for the engine model. When coolant temperature is excessive,
the stop telltale light turns on, an audible alarm sounds and a
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pop-up message appears on the DID. The engine protection
system will automatically derate and stop the engine in 30
PA1627 X3-45 Operator's Manual
Controls and Instruments
CAUTION
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