Installation manual
FUEL
SYSTEM
DIESEL
FUEL
Use a diesel
fuel
that meets the requirements
of
No. 2-D SAE
J 313 and has a cetane rating
of
45 or higher according
to
ASTMD975.
FUEL
WATER
SEPARATOR
A primary fuel filter
of
the water separating type must be
installed between the fuel tank and the engine to remove
water and other contaminant's from the fuel before they can
be carried to the fuel system on the engine.
Most installers include a filter/water separator with the
installation package as they are aware
of
the problems that
contaminant's
in
the fuel can cause.
A typical fuel filter/water separator is illustrated below. This
is
the Raycor Model 500 MA. Keep in mind that
if
a water
separator type filter is not installed between the
fuel supply
tank and engine-mounted fuel system, any water in the fuel
will affect the fuel pump, engine filter, and injection equip-
ment. The owner/operator is responsible for making certain
the fuel reaching the engine's injection equipment is free
of
impurities. This process is accomplished by installing and
maintaining a proper filtration/separation system.
FUEL
FILTER
WATER
SEPERATOR
tff\i
10
MICRON
ELEMENT
RECOMMENDED
The fuel injection pump is the most important component
of
the diesel engine,requiring the utmost caution in handling. The
fuel injection pump has been thoroughly bench-tested and the
owner-operator is cautioned not to attempt to service it.
If
it
requires servicing, remove it and take it to an authorized fuel
injection pump service facility. Do not attempt to disassemble
and repair
it.
Speed (hertz) and timing are the only adjustments the
servicing dealer can perform on the injection pump.
Other
types
of
adjustments or repairs must be performed by a
qualified injection service shop.
FUEL
LIFT
PUMP
Periodically check the fuel connections to and out
of
the
pump and make sure that no leakage is present and
that the
fittings are tight and secure. The DC ground connection at
one
of
the pumps mounting bolts should be clean and well
secured by the mounting bolt
to
ensure proper pump
operations.
When energized thru the preheat circuit, the fuel lift pump
will purge air from the fuel system and provide continuous
flow
of fuel
as
the engine is running.
FUEL
FILTERS
The fuel injection pump and the fuel injectors are precisely
manufactured and they must receive clean diesel fuel, free
from water and dirt. To ensure this flow
of
clean fuel, the fuel
must pass through at least two fuel filters, a fuel filter/water
separator and the engine's spin-on fuel filter. Visually inspect,
clean, and change these filters according to the maintenance
schedule in this manual.
FUEL
LIFT
PUMP
FILTER
To
ensure clean fuel into the fuel lift pump, there
is
a small
in-line fuel filter connected to the fuel lift pump elbow. Thus
filter should be replaced every
250 hours
of
operation.
FUEL
FILTER
ASSEMBLY
ENGINE
FUEL
FILTER
Periodically check the fuel connections and the bowl for
leakage. Clean the filter element with kerosene or diesel fuel
after the first 50 hours then follow the MAINTENANCE
SCHEDULE for cleaning and replacement.
Changing/cleaning
the
filter
element
1.
Shut off the fuel supply.
2. Unscrew the retainer ring that holds the filter bowl to
the
housing and allow the bowl to come away from the
housing,
3. Remove and replace the filter element and clean the bowl.
4. Replace the sealing
"0"
ring and reassemble the bowl
to
the housing. Thread the retainer ring on carefully
so
as
not
to cross thread. When retainer contacts the
"0"
ring,
tighten
114
- 1/2 turns by hand. Open the fuel supply and
run the engine to inspect for leaks.
Engines & Generators
18