Installation manual
FUEL
SYSTEM.
DIESEL
FUEL
Use
No.2
diesel fuel with a cetane rating of
45
or
higher.
bo
not
use
kerosene
or
home heating
fuel.
FUEL
FILTERS
'The
fuel injection pump
and
the fuel injectors are precisely
tnanufactured and they must receive clean diesel
fuel,
free
from water and dirt.
To
ensure
this
flow
of clean
fuei,
the
fuel
must pass through at least
two
fuel
filters,
a fuel 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
WATER
SEPARATOR
A primary fuel filter of the water separating type must be
tnstalled 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.
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
inaintaining a proper fuel filter/water separator between
the
fuel tank
and
the
generator/engine. Westerbeke recommends
a
10
micron
filter
be
used.
FUEL
INJECTION
PUMP
'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
disassembly and repair it.
The only adjustment the servicing mechanic should make
to
the fuel injection pump is
the
adjustment for
the
engine idle
speed (see
IDLE SPEED ADJUSTMENT under ENGINE
ADJUSTMENTS).
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
cOIDlection
at
one
of
the
pump's mounting
bolts
should
be
clean
and
well
secured
by
the
mounting bolt
to
ensure
proper
pump
operation.
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
into
the
fuel
lift
pump,
there
is
a
small
in-line
fuel
filter
connected
to
the
fuel
lift
pump
elbow.
This
filter
should
be
replaced
every
250
hours
of
operation.
ENGINE
FUEL
FILTER
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 ling 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.
THE
O-RING
GASKET
ONLY
NEEDS
TO
BE
REPLACES
IF
IT
SHOWS'
SIGNS
OF
AGING.
FUEL
FILTER
FUEL
LIFT
PUMP
LIGHTLY
WIPE
WITH
CLEAN
FUEL
Engines & Generators
13