Paccar PX-9 Operator's Manual - page 10
INTRODUCTION
blades, causing premature fan
failure.
•
Work areas should be dry, well lit,
well ventilated, free from clutter,
loose tools, parts, ignition sources
and hazardous substances.
•
Wear protective glasses and
protective shoes when working.
•
DO NOT wear loose-fitting or torn
clothing. Tie back and/or tuck
in long hair. Remove all jewelry
when working.
•
Before beginning any repair,
disconnect the battery (negative
(-) cable) and discharge any
capacitors.
•
Put a “DO NOT OPERATE” tag in
the operator's compartment or on
the controls.
•
Allow the engine to cool before
slowly loosening the coolant filler
cap to relieve the pressure from
the cooling system. See “Cooling
System” on page 5-15 for more
information on cooling system
maintenance.
WARNING!
Removing the fill cap on a hot en-
gine can cause scalding coolant
to spray out and burn you badly.
If the engine has been in opera-
tion within the previous 30 minutes,
be very careful in removing the fill
cap. Protect face, hands, and arms
against escaping fluid and steam
by covering the cap with a large,
thick rag. DO NOT try to remove
it until the surge tank cools down
or if you see any steam or coolant
escaping. In any situation, remove
the cap very slowly and carefully.
Be ready to back off if any steam
or coolant begins to escape.
•
Always use wheel chocks or
proper jack stands to support the
vehicle or vehicle components
before performing any service
work. DO NOT work on anything
that is supported only by lifting
jacks or a hoist. Before resting a
vehicle on jack stands, be sure the
stands are rated for the load you
will be placing on them.
•
Before removing or disconnecting
any lines, fittings, or related items,
relieve all pressure in the air, oil,
fuel, and cooling systems. Remain
alert for possible pressure when
disconnecting any device from a
system that contains pressure.
High pressure oil or fuel can cause
death or personal injury.
•
Always wear protective clothing
when working on any refrigerant
lines and make sure that the
workplace is well ventilated.
Inhalation of fumes can cause
death or personal injury. To
protect the environment, liquid
refrigerant systems must be
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