Fuel Sender; Fuel Lines & Hoses; Fuel Filters - Monaco 2009 Knight Owner's Manual

NOTE
Fill the fuel tank to reduce the
amount of potential condensation if
the motorhome is going to be stored
for any length of time. 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 sender,
located on the top
of the fuel tank,
is preset at the
factory and is non-
adjustable.
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 flexible hoses
to transfer lubricating oil, air, coolant and
fuel. Maintenance of hoses is an important
step in ensuring efficient, economical and safe
operation of the engine and related equipment.
23
INSPECTION
Check hoses for leaks daily 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,
frequently inspect fasteners and
tighten or replace them as necessary.

Fuel Filters

Two filters are used for
the engine: a primary and
secondary filter. The primary
filter is located roadside
behind the air conditioner
condenser; the seondary filter
090318d
is located in the rear 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.
Filter Maintenance Intervals:
Drain the primary fuel filter daily

before travel.
Change the primary fuel filter every six

months or every 15,000 miles or at the
first indication of power loss.
Refer to the engine OEM manual for

service intervals of the secondary fuel
filter.
Water in Fuel:
If water in fuel is found in the primary
filter, DO NOT continue engine operation.
Fuel contaminated with water can damage
fuel injectors. Water is heavier than fuel and
will collect in the primary filter bowl. Drain
primary filter using the valve on the bottom of
the filter.
NOTE
Always carry an extra filter as one
tank full of excessively contaminated
diesel fuel can plug a filter.
To Drain the Filter:
Wear safety goggles.

Shut off the engine.

Open the drain valve, by hand,

counterclockwise approximately 1
1/2 to 2 turns until draining occurs.
Drain water/fuel into a container and
dispose of in accordance with local
environmental regulations.
090426h
Close the drain valve by turning

clockwise when clear fuel is visible.
NOTE
Water and sediment from the filter can
contain petroleum products. Consult
the local environmental agency for
recommended disposal guidelines.
If unable to start, contact nearest Cummins
Center or phone 1-800-343-7357 for Cummins
Customer Assistance Center.