Installation manual
FUEL
SYSTEM
DIESEL
FUEL
Use
No.2
diesel fuel with a cetane rating
of
45
or
higher.
Do
not use kerosene
or
home heating fuel.
FUEL
FILTER/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 contaminants from the fuel before they can
be
carried to the fuel system
on
the engine.
Most installers include a fuel filter/water separator with the
installation package as they are aware
of
the problems that
contaminants in the fuel can cause.
A typical fuel filler/water separator is illustrated below. This
is the
Rayeor
Model
500
MA.
Keep in mind that
if
a water
separator type filter is not installed between the fuel supply
tank
and
engine-mounted fuet 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 fuel filter/water separator.
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.
A
WARNING:
Shut
off
the
fuel
valve
at
the
tank
when
servicing
the
fuel
system.
Take
care
in
catching
any
fuel
that
may
spill.
DO
NOT
allow
any
smoking.
open
"ames
or
other
sources
of
fire
near
the
fuel
sys-
tem
when
servic!ng.
Ensure
proper
ventilation
exists
when
servicing
the
fuel
system.
t(t
1
~'11
-~
:
FUEL
LIFT
PUMP
Q.,:;:~i;;-:-r-----i'DRAIN
TO
FUEL
i
FILTER,
The
fuel injection pump is a very important component
of
the diesel engine, requiring the utmost care in handling. The
fuel injection pump has been thoroughly bench-tested and the
owner-operator
is cautioned not to attempt to service it.
Ifit
requires servicing, remove
it
and take
it
to an authorized fuel
injection pump service facility.
Do
not attempt to disassem-
ble and repair it.
The
only adjustment the servicing mechanic should make to
the fuel injection
pump
is the adjustment for engine idle
speed.
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 pump's mounting bolts should
be
clean and well
secured
by
the mounting bolt to ensure proper pump opera-
tions.
When
energized thru the preheat circuit, the fuel lift pump
will purge air from the fuel system and provide a continuous
flow
of
fuel as the engine is running.
ENGINE
FUEL
FILTER
I
IBOWL,
,
Periodically check the fuel connections and the
bowl
for
leakage. Replace the filter element after the first
50
hours
then follow the
MAINTENANCE
SCHEDULE.
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
OR
carefully
so as not
to
cross thread.
When
retainer contacts the
"0"
ring,
tighten
114
-
112
turns
by
hand. Open the fuel supply.and
run
the engine to inspect for leaks.
Engines & Generators
23