maintenance. Follow these general
safety precautions:
²Wear safety glasses for eye
protection.
²Use safety stands whenever a
procedure requires you to work
under the vehicle.
²Be sure that the ignition switch
is always in the OFF position
unless otherwise specified.
²Be sure that the gearshift is in
the P (Park) position for
automatic transmissions or the 1
(First) position for manual
transmissions and engage the
parking brake.
²Block the opposite diagonal
wheels to prevent the vehicle
from moving.
²Operate the engine only in well
ventilated areas.
²Keep yourself and loose clothing
away from moving parts while
the engine is running.
²Protect yourself from engine
heat.
²Keep smoking materials and
other lit objects away from the
vehicle.
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Maintenance recommendations
7
Maintaining the system
Inspect all cooling system and
heater hoses for deterioration,
leaks and loose clamps. Service
and replace as necessary.
Cooling slots are provided in the
front grille. Do not block airflow by
placing any objects in front or
behind these slots.
Check air flow paths of the
radiator for any foreign material.
Clean these areas as necessary to
maintain maximum cooling
efficiency. When cleaning the
radiator, always clean from the
engine side of the engine
compartment to ensure that
foreign material is not jammed into
the radiator fins.
Maintenance recommendations
13
Heavy-duty battery special
service
Special service vehicles are
equipped with a maintenance-free
battery which does not require the
addition of water or other regular
service.
Installing aftermarket equipment
When installing aftermarket
equipment, avoid using fasteners
that are too long for the
application or are in an area that
might damage other vehicle
components (i.e., wiring, brake
lines, fuel tank and lines,
powertrain components exhaust
system, suspension, etc.).
Do not make electrical connections
to vehicle electrical systems not
specifically designed for
aftermarket equipment installation.
Do not install and components into
the Powertrain control module
(PCM) harness. Connecting into
this system may affect engine and
transmission operation. As an
example, connection of
aftermarket electrical equipment
into the brake light circuit or any
other circuit which is connected to
the PCM, anti-lock brake
computer, air bag system,
transmission or any other vehicle
system may cause vehicle
malfunction.
Severe duty equipment
19
