Installation manual
ENGINE
ADJUSTMENTS
DRIVE
BELT
ADJUSTMENT
For
your
safety,
WESTERBEKE
generator models
come
equipped
with
belt guards that cover over the belt(s) on the
front
of
the engine. ("Out
of
sight - out
of
mind."
The
belt
guard
is
NOT
installed for that purpose.) Operators are
advised that proper inspection, service, and maintenance is
required.
The
drive
belt
must
be
properly tensioned. Excessive drive
belt tension
can
cause rapid wear
of
the belt and reduce the
service life
of
the fresh water pump's bearing. A slack belt
or
the
presence
of
oil on the belt can cause belt slipping,
resulting
in
high
operating temperatures.
The
generator
have two drive belts,
one
drives the governor
and
alternator
and the other drives the raw water pump. The
tension
adjustment
procedure for both belts is as follows:
L
Remove
the
belt guard.
2.
Loosen
the
alternator adjusting strap bolt and the base
.
mounting
bolt.
3.
With
the belt loose, inspect· for wear, cracks and frayed
edges.
4_
Pivot
the
alternator on the base mounting bolt to the left
or
right
as
required, to loosen
or
tighten.
5.
The
drive
belts are properly adjusted
if
it can
be
deflected
no
less
than
3/8
inch (lOmm) and
no
more than
l!2
inch
(l2mm)
as
the belt is depressed with the thumb at the
.
midpoint
between the two pulleys on the longest
span
of
the
belt.
A
WARNING:
Never
attempt
to
check
or
adjust
a
drive
ben's
tension
while
the
engine
is
in
operation.
6.
Operate
the
generator for about 5 minutes, then shut down
the
generator
and recheck the belts) tension.
7.
Replace
the
belt guard.
FUEL
INJECTORS
NOTE:
WESTERBEKE
recommends
that
the
following
engine
adjustments
be
performed
by
a
competent
engine
mechanic.
The
injonnation
below
is
provided
to
assist
the
mechanic.
REMOVING
THE
INJECTORS
rIllE: Injector
must
be
serviced
in
a
"clean
room"
e1Wironment.
1.
Disconnect
the high pressure lines from the injectors and
loosen
the
lines
at
their attachment to the injection pump
and
move
them
out
of
the way
of
the injectors. Avoid
bending
the
lines.
2
Using
a 17mm long socket, remove the fuel return line in
its
entirety
from
the
top
of
the injectors. Take care not to
lose
the
two
sealing washers and banjo bolt
that
attaches
the fuel return line to each injector.
NOTE:
Clean
the
area around
the
base
of
the injector
prior
to
lifting
it out
of
the
cylinder head
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 17mm deep socket wrench
to
free
it and
then
lift it
out.
3. The injector seats in the cylinder head on a copper seal-
ing washer. This washer should
be
removed with the
injector and replaced with a new washer
when
the injec-
tor is reinstalled.
INJECTION
TESTING
1. Using the nozzle tester, check the spray pattern and injec-
tion starting pressure
of
nozzle and,
if
it exceeds the
limit, adjust or replace the nozzle.
When
using
nozzle
tester, take the following precautions:
A
CAUTION:
The
spray
Injected
from
the
nozzle
Is
of
such
velocity
that
It
may
penetrate
deeply
Into
the
skin
of
fingelS
and
hands,
destroying
tissue.
If
It
entelS
the
bloodstream,
It
may
cause
blood
pOisoning.
INJECTION
PRESSURE
TEST
Inspecting
Spray
Pattern
INJECTION
PRESSURE
140
·150
Kgl/cm'
(1991·2133
PSI)
1. Operate the hand lever
of
the nozzle tester at intervals
of
one stroke
per
second to check
if
the fuel is injected cor-
rectly in its axial direction. A nozzle is defective
if
it
injects fuel in an oblique direction
or
inseveral separate
strips. Also, a spray in the form
of
particles indicates a
defect. These defects may sometimes be caused by clog-
ging with dust and, therefore, all parts should he carefully
cleaned
before
reassembly.
DRIPTEST
~
NORMAL
,.d
llilOO
],
~
FAUlTY
V,
,if
~
'"
FAULTY
..
','
~t
2. Apply the pressure
of
1635 lb/in' (115 kg/cm') to nozzle
by operating the hand lever,
and
check the drips from the
nozzle tip.
If
it
drips
or
has a large accumulation
of
fuel
on the bottom, it is considered defective and should be
replaced. A very small
amount
of
fuel may sometimes
remain on the tip
of
the nozzle; however, this does not
indicate a defect.
CHATTERING
TEST
kiI
dI
omp
TEST
@
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,.
Engines & Genera,tors
29