Westerbeke 20B TWO Installation Manual Page 65

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LAY-UP
&
RECOMMISSIONING
GENERAL
Many owners rely on their boatyards to prepare their craft,
including engines and generators, for lay-up during the
off-season or for long periods
of
inactivity. Others prefer
to
accomplish lay-up preparation themselves.
The procedures which follow will allow you to perfonn your
own lay-up and recommissioning, or you may use them as a
check list if others do the procedures.
These procedures should afford your engine protection
during a lay-up and also help familiarize you with the
maintenance needs
of
your engine.
If
you have any questions regarding lay-up procedures, call
your local servicing dealer; he will be more than willing to
provide assistance.
PROPELLER
SHAFT
COUPLING
The transmission and propeller half couplings should always
be opened up and the bolts removed when the boat is hauled
out
of
the water or moved from land to water, and during
storage in the cradle. The flexibility
of
the boat often puts a
severe strain on the propeller shaft or coupling or both, while
the boat is taken out
or
put in the water. In some cases, the
shaft has actually been bent by these strains. This does not
apply
to
small boats that are hauled out
of
the water when
not in use, unless they have been dry for a considerable
period
of
time.
FRESH
WATER
COOLING
CIRCUIT
A 50-50 solution
of
antifreeze and distilled water is
recommended for use in the coolant system at all times.
This solution may require a higher concentration
of
antifreeze, depending on the area's winter climate. Check the
solution to make sure the antifreeze protection is adequate.
Should more antifreeze be needed, drain
an
appropriate
amount from
1he
engine block and add a more concentrated
mixture. Operate the engine
to
ensure a complete circulation
and mixture
of
the antifreeze concentration throughout the
cooling system. Now recheck the antifreeze solution's strength.
LUBRICATION
SYSTEM
With the engine warm, drain all the lubricating oil from the
oil sump. Remove and replace the oil filter
(Place some
paper towels and a plastic bag around the filter
to
catch the
oil during its removal).
When installing the new oil fllter, be sure to apply a small
amount
of
oil on the rubber sealing gasket at the base
of
the
filter. Fill the sump with the correct amount
of
oil for your
engine. (Refer
to
the SPECIFICATIONS section
of
this
manual).
Use an oil with an API specification
of
CF
or CG-4.
Run the engine and check for proper oil pressure and make
sure there are no leaks
..
A
CAUTION:
Do
not
leave
the
engine's
old
engine
oil
in
the
sump
over
the
lay-up
period.
Lubricating
oil
and
combustion
deposits
combine
to
produce
harmful
chemicals
which
can
reduce
the
life
of
your
engine's
internal
parts.
FUEL
SYSTEM
Top off your fuel tanks with
No.2
Diesel fuel. Fuel additives
such
as
BioBor and Diesel
Kleen
+
Cetane
Boost
should be
added at this time to control bacterial growth and to
condition the fuel. Care should be taken that the additives
used are compatible with the primary fuel filter/water
separator used in the system. Change the element in your
primary filter and clean the separator sediment bowl.
Change the fuel filter elements on the engine and bleed the
fuel system, as needed. Start the engine and allow it to run
for 5 -
10 minutes to make sure no air is left in the fuel
system. Check for any leaks that may have been created
in
the fuel system during this servicing, correcting them
as
needed. Operating the engine for 5 -
10
minutes will help
allow movement
of
the treated fuel through
1he
injection
equipment on the engine.
RAW
WATER
COOLING
CIRCUIT
Close the through-hull seacock. Remove the raw water intake
hose from the seacock.
Place
1he
end
of
this hose into a five
gallon bucket
of
clean fresh water. Before starting the engine,
check the zinc anode found in
1he
primary heat exchanger on
the engine and clean or replace it as required, and also clean
any zinc debris from inside the heat exchanger where the
zinc anode is located. Clean the raw water strainer.
Start
1he
engine and allow the raw water pump
to
draw the
fresh water through the system. When the bucket is empty,
stop the engine and refill the bucket with an antifreeze
solution slightly stronger than needed for winter freeze
protection in your area.
Start the engine and allow all
of
this mixture to be drawn
through the raw water system.
Once the bucket is empty, stop
the engine. This antifreeze mixture should protect the raw
water circuit from freezing during the winter lay-up,
as
well
as providing corrosion protection.
Remove the impeller from your raw water pump (some
antifreeze mixture will accompany it, so catch it in a bucket).
Examine the impeller. Acquire a replacement,
if
needed, and
a cover gasket. Do not replace
1hc
impeller (into the pump)
until recommissioning, but replace the cover and gasket.
INTAKE
MANIFOLD
AND
THRU·HULL
EXHAUST
Place a clean cloth, lightly soaked in lubricating oil, in the
opening
of
the intake manifold to block the opening. Do not
shove the cloth out
of
sight. (If it is not visible at
recommissioning, and an attempt
is
made to start
1he
engine,
you may need assistance
of
the servicing dealer). Make a
note to remove the cloth prior
to
start-up. The thru-hull
exhaust port can
be
blocked in the same manner.
l~tWESTERBEKE
I Engines & Generators
57
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