IC Bus CE Series 2020, Operation And Maintenance Manual

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Maintenance
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).
WARNING
To prevent personal injury and / or death, or
damage to property, never overfill the fuel tank.
Overfilling the tank could cause fuel spillage
and / or increased pressure inside the fuel
tank. Pressure in an overfilled tank may cause
leakage in the fuel system, which could result in
a potential fire / explosive hazard.
Frequently inspect condition of fuel tanks and mounting
hardware, fuel tank cap and vent, fuel lines, clips and routing.
Periodically drain water and sediment from the bottom of the
fuel tank via the drain plug on the bottom of the fuel tank.
See the Engine Operation and Maintenance Manual service
intervals for fuel filter water trap draining, fuel strainer draining
and fuel filter replacement.
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 IC Bus
® dealer)
or have your local IC Bus ® 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 which you know
pretreat their fuel with biocides.
4. Periodically, test the fuel supplied by your fuel vendor
for the presence of microbes.
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