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
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 type
of
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 iIIustrated below. This
is
the Raycor Model 445. 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
equipment. 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
SEPARATOR
[Owner
Installed]
FUEL
INJECTION
PUMP
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
disassemble
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
The
fuel
lift
pump
is
an
integral part of
the
fuel
injection pump.
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/water sepa-
rator 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
system
when
servicing.
Ensure
proper
ventilation
exists
when
servicing
the
fuel
system.
TO
LlFTPUMP
AND
INCOMING
FUEL
TO
INJECTION
PUMP
Changing
the
Fuel
Filter
1.
Shut
the fuel supply off.
LIGHTLY
WIPE
WITH
CLEAN
FUEL
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-
stall, turn the filter assembly counterclockwise carefully
until the O-ring contacts the sealing surface
of
the housing
bracket. Turn 2/3 further with the filter wrench.
NOTE:
The cartridge contains fuel.
Take
care not to spill it
during disassembly.
Engines & Generators
19