Priming The Fuel System; Starting The Engine - Navistar MaxxForce DT 9 Operation And Maintenance Manual

Priming the Fuel System

WARNING: To prevent personal injury or death, do not
smoke and keep fuel away from open flames and sparks.
CAUTION: To prevent engine damage, do not add fuel to the
fuel filter header. this can contaminate the fuel.
1. Set parking brake and shift transmission to park or neutral.
2. Verify water drain valve on primary fuel filter housing is
closed and fuel filter caps are on tight.
3. Turn ignition switch to ON for approximately 60 seconds
allowing electric fuel pump to prime the fuel system.

Starting the Engine

WARNING: To prevent personal injury or death, do not
use ether, propane, gasoline, or gasohol as starting aids.
WARNING: To prevent personal injury or death, do not
install ether start equipment, if an engine has a cold starting
device or other cold climate starting aid.
WARNING: To prevent personal injury or death, do not
use ether starting fluid to start engine.
Page 48
SECTION 4 – ENGINE OPERATION
Figure 26 Ignition switch positions
1. Set parking brake and shift transmission to park or neutral.
CAUTION: To prevent damage to the engine, do not depress the
accelerator pedal.
2. Depress clutch pedal if equipped.
3. Turn ignition switch to ON, to preheat the inlet air heater
NOTE: The ECM normally does not energize the inlet air heater
element during hot starts. However, the ECM senses reduced
atmospheric pressure at high altitude and could energize the air
heater element during hot starts.
4. Wait for the WAIT TO START lamp to stop illuminating.
Form No. 1172040R1
Printed in the United States of America
element. The WAIT TO START lamp will illuminate when
the inlet air heater is required.
Do not crank engine until the lamp is off. When the WAIT
TO START lamp goes off, turn ignition switch to START. If