Installation manual
INTRODUCTION
SERIAL
NUMBER
LOCATION
The engine's
model
number
and serial
number
are
located
on
a
nameplate
mounted
on
the
side of
the
engine's
manifold.
The engine's
serial
number
can
also
be
found
stamped
into
the
engine
block
on
the
flat
surface
of
the
block
just
forward
of
the
number
one
cylinders
injection
pump.
Take
the
time
to
enter
this
information
on
the
illustration of
the
nameplate
shown
below,
as
this
will
provide
a quick
reference
when
seeking
techuical
information
and/or
ordering
repair
parts.
UNDERSTANDING
THE
DIESEL
ENGINE
The
diesel
engine
closely
resembles
the
gasoline
engine,
since
the
mechanism
is essentially
the
same.
The cylinders
are
arranged
above a
closed
crankcase.
The crankshaft
is
the
same
general
type
as
a
gasoline
engine,
and
the
diesel
engine
has
the
same
type
of
valves,
camshaft, pistons, connecting
rods
and
lubricating
system.
Therefore,
to
a great
extent,
a diesel engine
requires
the
same
preventive
maintenance
as
a gasoline
engine.
The most
important
factors
are
proper
ventilation
and
proper
mainte-
nance
of the
fuel,
lubricating
and cooling
systems.
Fuel
and
lubricating
filter elements
must
be replaced
at
the
time
periods
specified,
and
frequent
checking for contaminant's
(water,
sediment,
etc.)
in
the
fuel
system
is
also
essential.
Another
important
factor
is
the consistent
use
of the same
brand of high detergent
diesel
lubrication oil designed
specifically
for diesel
engines.
The
diesel
engine
does
differ
from
the
gasoline engine,
however,
in its method of handling and
frring
of
fuel.
The
carburetor
and iguition
systems
are replaced
by
a single
component
- the fuel injection pump -
which
performs
the
function
of both.
ORDERING
PARTS
Whenever
replacement
parts
are
needed,
always
provide the
engine
model
number
and
serial
number
as
they
appear
on
the silver
and
black
nameplate
located
on
the
manifold.
You
must
provide
us
with
this
information
so
we
may
properly
identify
your
engine.
In
addition,
include
a complete part
description
and
part number
for
each
part
needed
(see
the
separately
furnished Parts
List).
Insist
upon
WESTERBEKE
packaged
parts
because will
fit
or
generic
parts
are
frequently
not
made
to
the
same
specifications
as
original
equipment.
SPARES
AND
ACCESSORIES
Certain
spares
will be
needed
to
support
and maintain your
WESTERBEKE
engine.
Your
local
WESTERBEKE dealer
will
assist
you
in
preparing
an
inventory
of spare
parts.
See
the
SPARE
PARTS
page
in
this
manual.
For
engine
accessories,
see
WESTERBEKE'S ACCESSORIES brochure.
RAW
WATER
COOLING
SYSTEM
Siphon-Break
For
installations where
the
water
injected exhaust
elbow
is
close
to
or
will
be below the
vessels
waterline,
provisions
must
be
made
to
install a
siphon-break
in
the
raw
water
supply
hose
to
the water injected exhaust
elbow.
The
siphon-
break
provides
an air vent
in
the
raw
water cooling
system
to
prevent
raw
water
from
filling
the
exhaust system
and
the
engine's
cylinders
when the
engine
is
shutdown.
A
CAUTION:
Failure·to
use
a
siphon-break
when
the
exhaust
manifold
injection
port
is
at
or
below
the
load
waterline
will
result
in
raw
water
damage
to
the
engine
and
possible
flooding
of
the
boat.
If
you
have
any
doubt
about
the
position of the
water-
injected exhaust elbow relative
to
the vessels
waterline
under
the
vessels
various
operating
conditions,
install a
siphon-
break.
This
precaution
is
necessary
to
protect
your
engine.
The siphon-break must be
installed
in
the highest
point
of a
hose
that
is
looped a
miuimum
of
20
inches
(51cm)
above
the
vessels
waterline. This
siphon-break
must
always
be
above
the waterline during
all
angles
of vessel
operation
to
prevent siphouing.
NOTE:
A siphon-break
requires
periodic inspection and
cleaning
to
ensure proper
operation.
Failure
to
properly
maintain a siphon-break
can
result
in catastrophic
engine
damage.
Consult
the
siphon-break manufacturer for proper
maintenance.
SIPHON-BREAK
WITH
STAINLESS
LOOPFOR
1"
HOSE
PART
NO.
044010
-.,y
WESTERBEKE
Engines & Generators
4