Regal 53 SC Owner's Manual page 482

DIESEL GENERATOR (WESTERBEKE)
Your yacht features a Westerbeke diesel generator as
standard equipment. If your vessel has Seakeeper a
larger diesel generator is used. The generator must be
decommissioned for storage in freezing climates. Your
Regal dealer or marine professional has special training
along with the necessary parts for winterizing your
generator. The information below gives you a sampling of
the procedures your dealer may employ when performing
this seasonal procedure. Refer to your generator operator's
manual for further information. The vessel must be in the
water for the procedures below. Remove any sound shield
enclosure as equipped.
A 50-50 solution of antifreeze and distilled water is
recommended for use in the fresh water cooling system at
all times. This solution may require a higher concentration
depending on the area's winter climate. Check the solution
to make sure the antifreeze protection is suffi cient.
To add antifreeze, drain an appropriate amount from the
engine block and add a more concentrated measure. Start
the engine to ensure a complete circulation and mixture
of the antifreeze concentration through out the cooling
system. Then recheck the antifreeze solution's strength
with a bulb type checker.
With the engine warm, drain all the engine oil from the oil
sump. Remove and replace the oil fi lter and fi ll the sump
with new oil. Use the correct grade of oil according to the
engine lubricating oil section of your generator operator
manual. Run the engine and check for proper oil pressure
and make sure it is leak free.
Do not leave the old engine oil in the crankcase over
the lay-up period. The old oil and combustion products
combine to produce harmful chemicals which can reduce
the life of your engine's internal parts.
Fill your fuel tanks off with number 2 diesel fuel but leave
room for expansion. Fuel additives such as BIOBOR and
STABIL should be added at this time to control algae and
condition the fuel. Care should be taken that the additives
used are compatible with the primary fuel fi lter/water
separator used in the system. The element in the primary
fuel fi lter/water separator should be changed and clean
the separator sediment bowl.
Storage & Winterization
Change the fuel fi lter elements on the engine and bleed the
fuel system as needed. Start the engine and let it 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 5-10 minutes will help allow
movement of the treated fuel through the injection
equipment on the engine.
Close the through hull seacock. Remove the raw water
intake hose from the fi tting. Place the end of this hose into
a fi ve gallon bucket of clean fresh water. Before starting
the engine check the zinc anode found in the 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 the engine and allow the raw water pump to draw the
fresh water through the system. When the bucket is empty
stop the engine and refi ll 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 bucket. Get a replacement if needed
and a cover gasket. Do not replace the impeller (into the
pump) until recommissioning, but replace the cover and
gasket.
Again, the above is an overview of the main elements that
your dealer may use to winterize the generator.
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