Engine Operation - freightliner S2 Operator's Manual

In the OFF position, the key slot is vertical; the key
can be inserted and removed only in this position.
The following can be operated in the OFF position
(regardless of whether the key is inserted): low beam
headlights, taillights, brake lights, road lights, clear-
ance lights, turn signals, hazard warning lights, horn,
CB radio, clock, and electric oil pan heater.
In the ACCESSORY position, the key is turned coun-
terclockwise. The radio (if so equipped), mirror heat,
air dryer, backup lights, and all of the components
that are operable in the OFF position are operable in
the ACCESSORY position.
All electrical systems are operable in the RUN posi-
tion. The warning lights and the buzzer for low air
pressure and low oil pressure operate until minimum
pressures are built up.
IMPORTANT: The propane engine is equipped
with an amber wait to start indicator. The indica-
tor light illuminates when the ignition is in the
RUN position prior to engine start-up. Do not
crank the engine until the wait to start indicator
light goes out. See the "Ametek Panel" informa-
tion in this chapter for the location of the wait to
start indicator.
Turn the key fully clockwise to the START position to
start the engine. When the engine starts, release the
key.

Engine Operation

General Information
NOTE: Before starting the engine, read the
"Ametek Panel" information in this chapter and
Chapter 4 for detailed information on how to
read the instruments and operate the controls.
Before operating the vehicle, perform the pretrip in-
spection and daily maintenance checks in
ter 14 and Chapter 15
NOTICE
If a vehicle does not start on the first attempt,
make sure that the engine has completely
stopped rotating before reapplying the starter
switch. Failure to do so can cause the pinion to
release and re-engage, which could cause ring
gear and starter pinion damage.
Chap-
of this manual.
Propane Fuel System
Moving a vehicle with the starter and/or using the
starter to bump the engine for maintenance pro-
cedures is strictly prohibited. Use of these meth-
ods to bump the engine over or move the vehicle
can cause the pinion to release and re-engage,
which could cause ring gear and starter pinion
damage.
Engine Starting
1. Set the parking brake.
2. Turn the ignition switch to the RUN position.
The amber wait to start indicator light illuminates
when the ignition is in the RUN position prior to
engine start-up. Do not crank the engine until the
wait to start indicator light goes out.
3. Make sure that the transmission shift control is in
Neutral (N), or if so equipped, the Park (P) posi-
tion.
WARNING
Never start the engine unless the parking brake
is applied. Accidental movement of the vehicle
could result in property damage, personal injury,
or death.
IMPORTANT: Do not depress the throttle pedal
while starting the engine.
4.
Turn the ignition switch to the START position.
After the engine starts, release the key.
NOTICE
Do not crank the engine for more than 30 sec-
onds at a time. Wait two minutes after each try to
allow the starter to cool. Failure to do so could
cause starter damage.
5. Bring the engine up to operating speed gradually
as it warms up and develops stable oil pressure.
IMPORTANT: When the engine is started, it
takes a short time to build up a lubricating oil
film between the shafts and bearings, and be-
tween the pistons and cylinder walls. The oil
pressure gauge indicates any drop in lubricating
oil pressure within 15 seconds of engine startup.
19.2