Peterbilt Model 320 Operator's Manual after 8-07 - Peterbilt Motors ...

Fuel Filters
WARNING! A mixture of gasoline or alcohol with
diesel fuel in the presence of an ignition source
(such as a cigarette) could cause an explosion.
You could be seriously injured. Use only the
recommended diesel fuel.
CAUTION: If anyone ever pours gasoline into
your fuel tank, drain the entire system. Otherwise,
the pump and engine will be damaged.
Don’t try to dilute the gasoline by adding diesel
fuel (See Warning above).
Fuel Filters
Please follow these recommendations when you are
changing your fuel filters or strainer elements. Your engine
will run better and last longer if you do. See the engine
manufacturer’s recommendations for proper water and
micron requirements.
• When removing filters, cover any electrical equipment
and wiring that might get soaked with fuel. Diesel fuel
may permanently damage electrical insulation.
PART 8: MAINTENANCE AND SERVICE
• When installing spin-on (throwaway) filters, hand
tighten them only to 1/2 to 2/3 turn after gasket contact.
Mechanical tightening of these filters may distort
or crack the filter head.
NOTE: To expel air from density-type strainer elements,
soak them in clean fuel before installing
them.
• When replacing a fuel filter element, don’t use a substitute.
Install only filter elements designed for fuel filtration.
First clean and inspect the shell. Then insert
the new element and fill the container at least 2/3 full
of clean fuel before installing the shell.
• Throw away old gaskets. Replace them with new ones
to ensure a positive seal.
• Position the shell and gasket properly. Then tighten
the cover nut or bolt just enough to prevent fuel leakage.
• After starting the engine, check for leaks around the
filter.
– 176 – Y53-6015 R(08/07)