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 filter/water separator
is
il1ustrated
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 fuel filter/water separator.
TYPICAL
FUEL
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.
If
it
requires servicing, remove it and take it
to
an authorized
fuel
injection pump service facility. Do not attempt to
disassem-
ble and repair it.
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
securedbi
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.
INLET
FUEL
FILTER
To
ensure clean
fuel
enters the
fuel
lift pump,
there
is
an
in-line filter
at
the incoming fuel line. This filter should
be
replaced every 200 operating hours.
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
flames
or
other
sources
of
fire
near
the
fuel
sys-
tem
when
servicing.
Ensure
proper
ventilation
exists
when
servicing
the
fuel
system.
LOOSEN
FITTING
-----l'-A
WHEN
PRIMING
FILL
FILTER
Changing
The
Fuel
Filter
0
1. Shut off
the
fuel
supply.
SPIN
ON
FUEL
FILTER
#24363
2. Loosen the
fuel
filter,
turning counterclockwise
with
a
filter wrench. Place the used
filter
in
a container
for
proper
disposal.
3.
Using a
rag,
wipe
clean the
sealing
face
on
the
housing
bracket so
the
new
filter
can
be
seated
properly.
4.
Lightly
oil
the sealing O-ring
on
the
new
filter.
To
rein-
staJ],
tum the
filter
assembly counterclockwise carefully
until the a-ring contacts
the
sealing surface of
the
housing
bracket.
Tum
213
further
with
the
filter
wrench.
5. The key-on preheat sequence
will
operate
the
fuel
lift
pump
and
quickly
fill
the
new
filter.
It
is
also
poSsible
to
hand prime
~he
filter using
the
lever
on
the
top.
6.
Run the engine and inspect the
filter
for
fuel
leaks.
Engines & Generators
14