Installation manual
ENGINE
ADJUSTMENTS
NOTE:
WESTERBEKE
recommends
that
the
following
engine
ad' 'st-
ments
be
peiformed by a competent
engine
mechanic.
The
infO!
below
is
provided
to
assist
the
mechanic.
DRIVE
BELT
ADJUSTMENT
Proper
inspection,
service
and
maintenance of the drive
belts
is
important
for
the
efficient
operation of
your
engine
(see
Drive
Belts
under MAINTENANCE
SCHEDULE).
Drive
belts
must
be
properly
tensioned.
Loose
drive
belts
will
not
provide
proper
alternator
charging
and
will
eventually
damage
the
alternator.
Drive belts that
are
too
tight
will
pull
the
alternator
out of alignment
and/or
cause
the
alternator
to
wear out
prematurely.
Excessive
drive
belt
tension
can
also
cause
rapid
wear
of the belt and
reduce
tlJe
service life of the coolant
pumps
bearing. A
slack
belt or the
presence of
oil
on
the belt
can
cause belt
slipping,
resulting
in
high
operating
temperatures
and tachometer
variations.
The
drive
belt
is
properly
adjusted
if
the belt
can
be
deflected
no
less
than
3/8
inch
(lOmm)
and
no
more
than
112
inch
(12mm)
as
the belt
is
depressed
with the
thumb
at
the
mid-
point
between
the
two
pulleys
on
the longest
span
of the
belt.
A
spare
belt or belts
should
always
be carried
On
board.
A
WARNING:
Never
attempt
to
check
or
adjust
the
drive
belt's
tension
while
the
engine
is
in
operation.
Adjusting
Belt
TenSion
I,
Loosen
the alternator adjusting strap bolt
and
the
base
mounting
bolt.
2.
With
the
belt
loose,
inspect
for
wear,
cracks
and
frayed
edges.
3. Pivot
the
alternator
on
the
base mounting bolt
to
the
left
or right
as
required,
to
loosen
or tighten.
4.
Tighten
the
base
mounting
bolt
and the
adjusting
strap
bolt.
5.
Run
the
engine for
about
5 minutes,
then
shut
down
and
recheck
the belt
tensions.
RAW
WATER
PUMP
The
tension
of
the
raw
water
pump belt is
adjusted
by
releasing
the
pumps
fasteners
and
Sliding
the
pump
back
and
forth.
The water
pump
belt should be
finnly
tight
and
checked
often.
STARTER
AND
DC
ALTERNATOR
SERVICE
The
starter
and the
DC
charging
alternator
should
be
maintained following
the
maintenance
schedule
in
this
manual.
Major service/overhaul of
the
starter or
DC
charging
alternator should be undertaken
as
needed.
. Refer
to
your
WESTERBEKE SERVICE
MANUAL.
10
case of
severe
vibrations
and detonation
noise,
have the
injectors
checked
and
overhauled
by
an authorized
fuel
injection
service
center.
Poor
fuel
quality,
contaminant's and
loss
of
positive
fuel
pressure
to
the injection
pump
can result
in
injector
faults.
Since
fuel injectors must be serviced in a
clean
room
environment,
it
is
best
to
carry
at
least one extra
injector
as
a
spare
should
a
problem
occur.
Before
removing
the
old
injector,
clean the area
around
the
base
of
the
injector
to
help
prevent
any
rust or
debris
from
falling
down
into
the
injector
hole.
If
the injector will
not
lift
out
easily
and
is
held in by carbon build-up
or
the
like, work
the
injector
side-to-side
with
the
aid
of
the socket
wrench
to
free
it,
and
then
lift it
out.
The injector
seats
in
the
cylinder head
on
a
copper
sealing
washer.
This
washer
should be removed with
the
injector and
replaced
with
a
uew
washer
when
the
new
injector is
installed.
The fuel injectors
should
be
pop
tested after
750
operating
hours,
overhaul
if
needed.
-..
.
RAW
WATER
PUMP
55:
FOUR
INJECTION
STARTING
PRESSURE
1850
TO
1990
PSI
(12.7T0
13.7MPA)
,.y:
WESTERBEKE
EnQjns.~
& Generators
35