251
2008 IMPERIAL
CHASSIS INFORMATION — 10
WARNING:
DO NOT mix gasoline, alcohol or
gasohol with diesel fuel. This mixture
can cause an explosion.
NOTE:
Due to the precise tolerances of diesel
injection systems, it is extremely
important that fuel be kept clean and
free of dirt or water. Dirt or water in the
system can cause severe damage to both
the fuel pump and the fuel injectors.
Fuel additives for lubricity are not
recommended. There are numerous
diesel fuel additives to help remove
moisture from fuel, prevent microbe
growth and to prevent gelling during
cold weather. Before adding any type
of fuel additive or extender, consult the
Manufacturer’s Owner’s Manual.
Fuel Tank
Pick-up and return lines are placed at opposite
ends of the tank to inhibit fuel aeration. The
engine pickup tube is cut at a 45° angle to allow
optimum
fl
ow to the engine. The generator and
Aqua-Hot intake tubes are set to approximately
¼ of a tank. This will prevent depleting the fuel
supply while dry camping.
NOTE:
Fill the fuel tank during storage
to reduce the amount of potential
condensation. After storage, check
the vent tube for blockage. It is not
uncommon for insects to plug the vent
tube. If pressure or vacuum exists when
the fuel cap is removed, the vent tube
may be blocked. The end of the vent
tube is located on the curbside of the
fuel tank, near the bottom.
Fuel Sender
The fuel sending unit is located on the
top of the fuel tank on the passenger side.
These units provide a resistive output (0-
88 Ohms) in order to operate an electrical
gauge. There is no calibration adjustment on the
sending unit.
Fuel Lines & Hoses
Make a visual check for fuel leaks at all
engine-mounted fuel lines, connections and at
the fuel tank pick-up and return lines. Leaks
in this area may best be detected by checking
for accumulation of fuel under the tank.
Engine performance and auxiliary equipment
is dependent upon the ability of
fl
exible hoses
to transfer lubricating oil, air, coolant and
fuel. Maintenance of hoses is an important
step in ensuring ef
fi
cient, economical and safe
operation of the engine and related equipment.
INSPECTION:
Check hoses for leaks each day as part
of the pre-start inspection. Check all
fittings, clamps and ties. Ensure the
hoses are not touching shafts, couplings
or heated surfaces, including exhaust
manifolds, sharp edges or other obvious
hazardous areas. Vibration from the
engine and road can move or fatigue
clamps and ties. To ensure continued
proper support, inspect fasteners
frequently and tighten or replace them
as necessary.
Fuel Filters
Two
fi
lters are used for the engine: a primary
and secondary
fi
lter. Both
fi
lters are located in
the engine compartment.
NOTE:
It is recommended to wear gloves and
old clothing when working with diesel
fuel. Avoid getting fuel in the interior of
the motorhome.
Fuel Sender
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