freightliner CENTURY CLASS S Driver Manual page 98

Engines and Clutches
start the vehicle. This could result in a flash fire
causing serious personal injury or property dam-
age.
WARNING
Starting fluid is highly flammable and explosive.
It can cause serious injury or death if improperly
handled. Do not smoke where starting fluid is in
use. Keep sparks, flames, and arc welding equip-
ment away from starting fluid.
Caterpillar
NOTE: Before doing these steps, do the steps
in "Prestart".
1. Turn the ignition switch to the on position
(Fig. 7.6). All the electronic gauges on the ICU
(instrumentation control unit) complete a full
sweep of their dials, the warning and indicator
lights light up, and the buzzer sounds for three
seconds.
ACC
03/22/2001
Fig. 7.6, Ignition Switch Positions
NOTE: The engine electronics supply the cor-
rect amount of fuel for starting the engine. Pedal
pressure is unnecessary.
2.
Turn the ignition switch to the start position. Do
not press down on the throttle pedal. Release
the switch the moment the engine starts.
2.1
If the engine does not start after 30 sec-
onds of cranking, turn the ignition switch
off.
7.7
OFF
ON
START
f602079
NOTE: Some starters are equipped with op-
tional overcrank protection. If overcranking
occurs, a thermostat breaks the electrical
circuit to the starter motor until the motor
has cooled.
2.2 Wait two minutes to allow the starter
motor to cool. Turn the ignition switch
back to the on position and try again to
start the engine.
2.3 As soon as the engine starts, release the
ignition switch, allowing the engine to run
at a slow idle.
CAUTION
If the oil pressure is less than 5 psi (35 kPa), shut
down the engine immediately to prevent serious
damage. If the vehicle is equipped with an auto-
matic shutdown system, the engine will shut
down after 30 seconds.
3. Caterpillar C–10/C–12/C–15/C–16 engines may
be operated at low load and speed once the en-
gine oil pressure has reached 10 to 20 psi (69 to
138 kPa). Caterpillar 3406E engines may be op-
erated at low load and speed once the engine oil
pressure has reached 18 psi (124 kPa).
4. When the engine has reached the normal operat-
ing temperature of 189°F (87°C), the engine may
be operated at full load.
Cummins
NOTE: Before doing these steps, do the steps
in "Prestart".
1.
Turn the ignition switch to the on position
(Fig. 7.6). All the electronic gauges on the ICU
(instrumentation control unit) complete a full
sweep of their dials, the warning and indicator
lights light up, and the buzzer sounds for three
seconds.
2.
Turn the ignition switch to the start position. After
the engine starts, release the key.
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.