Specifications
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
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
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
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.
The owner/operator
is
responsible
for
making
certain the
fuel reaching the engine's
injectlQn
equipment
is
free
of
impurities.
This
process
is
accomvij.shed
by
installing and
maintaining 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
disassemble and repair
it.
Do
not
send
the timing
shims
with the injection
pump,
leave on
engine.
The only adjustment the servicing mechanic should
make
to
the fuel injection pump is the adjustment for
the
engines
running speed
(see
IDLE
SPEED ADJUSTMENT under
ENGINE APJUSTMENTS).
FUEL
LIFT
PUMP
Periodically check the fuel
connections
to
aud
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
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 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
on
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.
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