4.
Tighten the fuel filter another ¾ of a
turn after the gasket makes contact
with the filter head.
5.
If required, connect the wiring
harness to the water in fuel sensor.
6.
Connect the batteries.
WARNING
Batteries can emit explosive gases. To
reduce the possibility of personal in-
jury, always ventilate the compartment
before servicing the batteries. To re-
duce the possibility of arcing, remove
the negative (-) battery cable first and
attach the negative (-) battery cable
last.
Fuel System Priming
The following specialty tools may be
required:
•
Compuchek™ fitting, Cummins®
part number 382842
•
Orificed diagnostic fuel line,
Cummins® part number 3164621
•
Adapter fitting, Cummins® part
number 3932302
•
Fitting, quick disconnect - Male,
Cummins® part number 3377244
•
A container that is safe to collect 1
gallon of diesel fuel
If the engine has been allowed to run out of
fuel or the fuel system has been serviced
or repaired, it will be necessary to prime
the fuel system.
WARNING
The fuel pump, high-pressure fuel
lines, and fuel rail contain very high-
pressure fuel. To reduce the possibility
of personal injury, never loosen any fit-
tings while the engine is running.
1.
Turn the key to the ON position, but
do
not
attempt to start the engine.
Listen for the fuel priming pump to
run. After it shuts off, turn the key
to the OFF position for 5 seconds.
Repeat this process 10 times.
2.
Attempt to start the engine. If the
engine will not start after 3
attempts, continue with this
procedure.
NOTE
Crank the engine in 15 second inter-
vals with a 15 second break between
cranking. This reduces the possibility
of overheating the starter motor.
NOTE
The engine can possibly run rough for
several minutes until the air is out of
the system.
3.
If the engine did not start in the
previous step, install a
Compuchek™ fitting (part number
3824842) on the engine fuel filter
head inlet port.
1
Diagnostic Fuel Line
2
Compuchek™ Fitting
ENGINE MAINTENANCE - Maintenance Procedures
Y53-1185-1J1 (10/21)
63
2
Summary of Contents for PX-9
Page 1: ...Operator s Manual Operator s Manual 2022 Model Year Warranty 2021 Emissions...
Page 2: ......
Page 3: ...PX Operator Manual PACCAR PX 9 Engine...
Page 4: ......
Page 5: ...Engine Operation 1 Engine Maintenance 2 Engine Warranty 3 Contents...
Page 78: ...ENGINE MAINTENANCE Engine Identification Y53 1185 1J1 10 21 75 2...
Page 92: ...ENGINE WARRANTY United States and Canada Engine Warranty Y53 1185 1J1 10 21 89 3...
Page 96: ...Index...
