2 0 0 8 K n I G h t
chassIs InformatIon — 10
223
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.
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, inspect fasteners frequently 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 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.
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.
HyDraUlIc SyStem
On a walk around and pre-check of the
motorhome, look for oil leaks under the coach
and around hose fittings. If a hose connection
appears to be leaking, clean the filter and the
surrounding area. If seepage continues, have the
problem corrected to prevent an untimely failure.
Hydraulic Reservoir
The hydraulic filter assembly, located inside
the reservoir, is rated at ten micron*. The
reservoir is filled with 15W-40 motor oil from
the factory.
090426h
090391
Located in the rear
engine compartment
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