Starting And Stopping Procedures; General Information - PREVOST Motorcoach XL Series Operator's Manual

STARTING AND STOPPING PROCEDURES

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GENERAL INFORMATION

CAUTION: Read this section of manual before
driving vehicle.
Starting engine
compartment
The following procedure is used to start and stop
the engine from the driver's compartment.
Starting engine
1. Make sure the starter selector switch in engine
compartment is set to the "NORMAL" position and
that main battery disconnect switch (see page 2-2)
is set to the "ON" position.
2. Make sure the parking brake control valve
knob, located on R.H. lateral console, is pulled all
the way up, so that the spring-loaded parking
brakes are applied.
3. Make sure transmission is in neutral.
4. Turn ignition key to "START" position, then
release it as soon as engine starts.
NOTE: If engine does not start, ignition key must
be returned to the "OFF" position prior to
restarting.
CAUTION: Special precautions are necessary
with turbocharged engines to avoid possible
turbine damage. After starting, run the engine at
low idle for two minutes to allow flowing of
lubricant to the turbocharger. Afterwards, run at
fast idle and check oil pressure before attempting
to drive the vehicle.
Do not engage starter for more than 15 seconds
at a time. If engine does not start within 15
from driver's
XL Series Motorcoach
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seconds, release ignition key and allow starter to
cool for one (1) minute before engaging starter
again. Continuous use of the starter without
allowing a cooling period may damage the starter
motor.
With DDEC engines, pressure must not be
applied on accelerator pedal before starting. An
application on pedal will induce a fault information
to the Electronic Control Unit, thus affecting the
fuel system control.
If accelerator pedal is depressed inadvertently,
release it and wait approximately 30 seconds
before resuming starting procedure.
Stopping engine
1. Apply parking brake then set transmission to
the neutral position.
2. Allow engine to run at slow idle for at least two
minutes, then shut off engine. This will ensure
that the turbine speed has dropped, and the
engine exhaust gas temperature is down to
approximately 300°F. If engine is equipped with
pyrometers, temperature can be observed.
CAUTION: Do not shut the engine down directly
from high rpm.
If vehicle is parked and left unattended for an
extended period of time, main battery disconnect
switch (see page 2-2) should be set to the "OFF"
position.
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