freightliner S2 Operator's Manual page 56

Engines
Engine Starting
For cold-weather starting, refer to the Cummins or
Mercedes-Benz engine manufacturer's operator's
manual, as applicable, for detailed instructions.
General Information
NOTE: Before starting the engine, read
ter 3 and Chapter 4
information on how to read the instruments and
operate the controls.
Before operating the vehicle, perform the engine pre-
trip inspection and daily maintenance checks in
Chapter 14 and Chapter 15
NOTICE
When starting a vehicle equipped with a manual
transmission and clutch lockout switch, the
clutch pedal must be fully depressed during the
entire start sequence. Failure to do so can cause
the pinion to release and re-engage, which could
cause ring gear and starter pinion damage.
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.
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.
NOTICE
Never attempt to start any Cummins or
Mercedes-Benz engine using ether or any other
starting fluid. Serious engine damage could re-
sult.
1.
Set the parking brake.
2. Turn the ignition switch to the ON/RUN position.
The low air pressure and low oil pressure warn-
ing lights (or messages) and buzzer operate until
the engine is started and pressure is built up.
8.1
Chap-
in this manual for detailed
of this manual.
IMPORTANT: On vehicles equipped with an in-
take air preheater, the INTAKE HEATER indica-
tor stays on for a minimum of two seconds, re-
gardless of coolant temperature. Wait until the
INTAKE HEATER indicator goes out before at-
tempting to start the engine.
NOTE: On vehicles equipped with a neutral start
switch, the transmission must be in neutral be-
fore the engine can be started.
3. For manual transmissions, place the transmis-
sion in neutral and depress the clutch pedal.
For automatic transmissions, make sure that the
transmission shift control is in Neutral (N), or if
so equipped, the Park (P) or Park Brake (PB)
position.
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.
NOTE: Some starters are equipped with op-
tional overcrank protection. If overcranking oc-
curs, a thermostat breaks the electrical circuit to
the starter motor until the motor has cooled.
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.
See the applicable engine manufacturer's op-
erator's manual for minimum idle oil pressure
specifications.