CAUTION
Protect the turbocharger during the start-up by
not opening the throttle or accelerating the en-
gine above 1000 rpm until normal engine idle oil
pressure registers on the gauge.
WARNING
Never pour fuel or other flammable liquid into the
air inlet opening in the air intake in an attempt to
start the vehicle. This could result in a flash fire
causing serious personal injury or property dam-
age.
Caterpillar
NOTE: Before doing these steps, do the steps
in "Prestart."
1.
Turn the ignition switch to the on position. See
Fig. 7.7. 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 3
seconds.
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.
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.
Detroit Diesel S60
NOTE: Before doing these steps, do the steps
in "Prestart."
1.
Turn the ignition switch to the on position. See
Fig. 7.7. 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.
When all the indicators go out, turn the ignition
switch to the start position. Without touching the
throttle pedal, start the engine. If the engine
won’t start within 15 seconds, release the ignition
switch and allow the starter motor to cool.
03/22/2001
OFF
ON
ACC
START
f602079
Fig. 7.7, Ignition Switch Positions
Engines and Clutches
7.7
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