Navistar WorkStar Series, Operator'S Manual

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Maintenance Instructions
all microbes, fuel tank draining alone will not eliminate the
problem. For vehicle operators experiencing microbe growth in
their fuel, the following is recommended:
1. Drain and clean the fuel tank(s) every 12 months or
more often. Clean the tanks with a professional fuel tank
cleaning system (available through your International
dealer) or have your local International dealer perform
the service for you.
2. Treat your vehicle fuel tanks and bulk tanks regularly
with a biocide from a reputable vendor.
3. Purchase fuel only from vendors that pretreat their fuel
with biocides.
4. Periodically test the fuel supplied by your fuel vendor for
the presence of microbes.
Frame
International truck chassis are manufactured with frame rails
of either mild carbon steel or HSLA (High Strength Low Alloy)
steel, and each must be handled in a specific manner to
ensure maximum service life. Before attempting frame repair or
modification, consult the Service Manual or your International
dealer.
Tow Hooks, Tow Pins, and Pintle Hooks
Permanent or removable tow hooks as well as pintle hooks (if
present) should be inspected for functionality, damage, or a
loose mounting. Removable tow hooks and or pins should be
stored in such a way that they will not be lost, dislodged, or
damaged.
Noise Emissions – Exterior
Instructions for Proper Maintenance
In order to comply with federal exterior noise regulations, your
vehicle may be equipped with noise emission items. Depending
upon the vehicle configuration, it may incorporate all or some of
the following:
Air Intake System
• Air Cleaner – should be inspected and its location should
not be altered. Do not alter inlet and outlet piping.
Body
• Wheel Well – splash shields, cab shields, and underhood
insulation should be inspected for deterioration, dislocation,
and orientation and repaired or replaced as necessary.
Cooling System
• Check fan for damage to blades. Replace, if damaged,
with manufacturer’s recommended parts. Inspect for
fan-to-shroud interference and any damage to shroud, such
as cracks and holes.
• Fan speed ratio should not be changed and fan spacer
dimensions and position should not be altered.
• Inspect for proper operation of fan clutch, making sure that
the fan is disengaged when cooling of engine is not required.
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