Engine
After starting the engine, but before operation, be sure the indicator
lights and gauges work. The braking system air pressure should read
at least 81 psi (490 kPa) or above. Coolant temperature should be 158°
F (70° C) or above, and the parking brake released. You can now
operate the motor coach in a safe manner.
Normal Driving Conditions
Ensure the following are within their acceptable limits.
•
Oil pressure should be within the range of 33 to 52 psi (227 to 358
kPa ).
•
Water temperature should be within the range of 176 to 200° F (79
to 94° C).
•
The indicator of the air pressure gauge should be within the green
range of 78 to 130 psi (538 to 896 kPa).
If you encounter any abnormal sounds or smells, stop and check the
motor coach. Avoid any abrupt acceleration or braking if possible. Avoid
engine over-speed.
Before Stopping Engine
CAUTION
Do not shut off the engine while vehicle is in motion. This will
cause eventual brake and immediate power steering failure.
A hot engine has a great deal of heat stored up in its iron mass. Let the
engine idle for no more than 10 minutes before shutting down the
engine.
This will allow circulating coolant and lubricating oil to carry heat away
from cylinder head, valves, pistons, cylinder liners, and bearings, thus
preventing warping of valve stems or distortion of other parts resulting
from uneven cooling.
NOTE: Refuel before final shutdown. The less air space in the fuel tank
means that there is less opportunity there will be for water to condense
in the tank.
Stopping The Engine
CAUTION
Do not shift into neutral until vehicle is stopped!
Perform the following procedures:
1.
Bring the motor coach to a complete stop using the service brakes.
2.
Shift transmission into neutral. The transmission should be set to
the neutral position before shutting off the engine to prevent an
error report display.
3.
Set parking brake by pulling out control knob.
4.
Allow the engine to cool below 194° F (90º C). Do so by letting the
engine idle no more than 10 minutes.
5.
Shut engine down by turning the ignition key to the ACC position.
The accessory position cuts off the fuel supply and shuts down the
engine.
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