Navistar ProStar+, Руководство по эксплуатации и обслуживанию, Страница: 240 / 304

Maintenance Instructions
Start cold engine and view fan to see that it is rotating more
slowly than the fan pulley (fan clutch is disengaged). Achieve
operating temperature and observe that the fan is engaged.
Fuel System
GOVERNMENT REGULATION: Diesel fuel sold for
use in 2007 and later highway vehicles must be limited
to a sulfur content of 15 parts per million (ppm).
Frequently inspect condition of fuel tanks and mounting
hardware, fuel tank cap and vent, fuel lines, clips and routing.
At every Preventive Maintenance (PM) (or daily if necessary)
drain water and sediment from the fuel / water separator
filter (if equipped). If the vehicle is equipped with an optional
Davco
®
fuel / water separator, inspect the level of the fuel in the
see-through globe and replace the fuel / water separator filter
element if the fuel level has reached the top of the globe. In
all cases, be sure to use the proper fuel / water separator filter
element with the correct part number and filter efficiency rating.
Fuel Tank Draining and Cleaning
Periodically (annually is recommended) drain water and
sediment from the fuel tank via the drain plug on the bottom of
the fuel tank. Drain and flush sediment from fuel tank at least
every 12 months or more frequently if fuel quality or type of fuel
dictates.
Since Ultra-Low Sulfur Diesel (ULSD) fuel tends to absorb
more water and engines are operating at higher temperatures,
microbe growth in the fuel tanks has become more prevalent.
Microbe growth results in more contaminants in the fuel and
reduces fuel filter life. Since fuel tank draining does not remove
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 dealer), or have
your local 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.
Crankcase Ventilation Filter
Refer to the Engine Operation and Maintenance Manual for the
proper replacement interval and instructions.
Frame
International ® chassis are manufactured with frame rails of
HSLA 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
Truck dealer.
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