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FUEL SYSTEM
DIESEL
.filii.
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.
DESCRIPnON
Fuel
is
drawn into the engine's fuel system by the electric
fuel pump mounted on the generator's drive engine. Fuel
is
drawn from the fuel tank through the primary fuel
filter/water separator through the fuel pump, then under
pressure (6-8 psi) and delivered to the secondary fuel fi,lter
mounted on the engine. Fuel passes through this filter to the
fuel injection pump where the injection pump delivers it to
the mjectors, The fuel serves three purposes in the system.
It
is
used for combustion, lubrication and carries heat away
from the injection equipment through the return back to the
fuel tank where it is dissiPated in the cool fuel in the tank.
FU~L
SYSTEM DIAGRAM (TYPICAL)
FOB. SYSTEM
All WESTERBEKE ENGINE/GENERATOR
INSTALLATIONS REQUIRE
AN
OWNER-INSTALLED
FUELJWATER SEPARATOR
;PRIMARY
. FUEL FILTER
WATER SEPERATOP
tO MICRON
ELEMENT
:-L.II--~J
RECOMMENDED
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
~ngine~_
A typical fuel filter/water separator is illustrated below. This
is the Raycor Model500 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
equipment The owner/operator
is
responsible for making
certain
the
~1
reaching the engine's injection equipment
is
free of iniplirities. This process
is
accomplished by installing
and maintaining a proper filtration/separation system.
SECONDARY ON-ENGINE FUEL FILTER
Change the filter element after
the
initial 50 hours of
operation then follow the
MAINTENANCE SCHEDULE
in ~s.manual.
Changing The Fuel Filter Element
1. Shut the fuel supply off.
2. Unscrew the retaining ring that holds the filter bowl to the
housing and allow the bowl to come away from the hous-
ing. Hive some absorbent towels under the bowl to catch
any fuel.
3. Remove
the
filter element. Replace the "0" ring that the
element fit on to. Clean the bowl. -
· ·
4. Replace the large sealing "0" ring. Install a new
e~ement
Reassemble the bowl to the housing.
Thread the
retaining
ring on carefully so as not to cross
thread.
When the
retaining ring contacts the "0" ring, tighten 1/4-1/2 turn
by hand. Turn on the fuel supply and bleed the engine via
the preheat circuit Then run the engine and inspect for
anyleaks.
·
{~IWESTERBEKE
l
Engi~~
!ft Generators
FUEL FILTER
SECONDARY
. 17
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