Paccar PX-7, Operator'S Manual

Page: 65 / 92

6. Check the system for leakage while
idling. Then turn the engine OFF
and check the system again for
leakage.
7. If the engine does not start within
this time, repeat steps two and
three until the engine starts. If the
engine still does not start, allow the
starter to cool down for at least 5
minutes before repeating the
procedure.
PACCAR Fuel Blending Valve Position
1 2
1. Run (open)
2. Prime (closed)
NOTE
If you just finished priming the secon-
dary (engine-mounted) fuel filter, follow
the same procedure to replace and
prime the primary (chassis-mounted)
fuel filter.
8. If equipped with a PACCAR fuel
blending valve, turn the valve to the
RUN (open) position.
NOTE
Failure to return the PACCAR fuel
blending valve to the RUN (open) posi-
tion will prevent fuel recirculation and
heating.
WARNING
DO NOT loosen any fuel line fittings in
order to bleed the fuel system of air.
The system is under high pressure
which, when relieved, could cause
death, personal injury, equipment or
property damage.
Cooling System
Your engine may be equipped with a
coolant filter designed to capture and
remove harmful deposits from the cooling
system to help prolong system life. Refer to
the Preventative Maintenance Schedule for
the recommended coolant filter change
service interval.
WARNING
Do not remove the surge tank fill cap
on a hot engine. It can cause scalding
coolant to spray out and you could be
burned. If the engine has been operat-
ed within the last 30 minutes, be very
careful in removing the radiator cap.
Protect face, hands, and arms against
escaping fluid and steam by covering
the cap with a large, thick rag. Failure
to comply may result in death, person-
al injury, equipment or property dam-
age
ENGINE MAINTENANCE - Maintenance Procedures
Y53-1183-1G1 (05/19) 63
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