PREVOST H3-41 - Page 40

CONTROLS AND INSTRUMENTS
Destination Sign (Optional)
06261
Turn ON to illuminate the
destination sign.
Telltale Light Test
06263
Press this switch while ignition is
in the ON
position to illuminate
the telltale light cluster
. Perform
this test to verify indicator light
functionality. Telltale lights will
turn off automatically after about
three seconds.
Fast Idle
06264
For extended idling periods, run
the engine at fast idle
. Press
down the rocker switch to
engage fast idle. This increases
the engine speed to
approximately 1,000 rpm.
Return to normal idle before
driving or when stopping engine.
Note: If the parking brake is released and/or the
transmission is engaged with the engine running
at fast idle, the engine will return to normal idle
and remain there as long as the parking brake is
not applied and/or transmission is not placed in
neutral (N).
Caution:
Return the engine to normal idle
before shutting the engine OFF.
Transmission Output Retarder (Optional)
06252
Press rocker switch to activate
the transmission retarder. Refer
to "Transmission Output
Retarder" in this chapter.
JACOBS Engine Brake (Optional)
06253
Press this
switch to the first
position to actuate the system to
2/3 engine brake and press to
the second position for full
application of engine brake.
Refer to "Other Features"
chapter.
Warning:
Engine brake must be used on dry
road only. Never use the engine brake on
slippery roads; loss of control could result.
Note:
Engine brake is activated when
accelerator pedal is released and
the engine
speed is higher than 750 rev/minutes. Stoplights
turn ON when the engine brake is used.
Engine Stop Override
06265
Press this switch then release to
override the
emergency engine
shutdown
protection. Engine
emergency shutdown will be
turned OFF for 30 seconds. This
procedure can be repeated if
done before the 30 seconds are
up.
Caution: Use sparingly and in order to move
the vehicle to a safe parking place only.
Excessive use can cause severe engine
damage.
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