Air Intake/Silencer - Westerbeke 8.0KW - 60Hz EDT Operator's Manual

COOLING SYSTEM
Zinc Anode·
,
/
A zinc anode, or
pencil,
is located in the raw water cooiing
circuit within the heat exchanger. The pmpose of having the
zinc anode is to sacrifice them to electrolysis action taking
place in the raw water cooling circuit, thereby reducing the
effects of electrolysis on other components of the system.
The condition of the zinc anode should be checked monthly
and the anode cleaned or replaced as required. Spare anodes
should be carried on board.
NEW
REPLACE
REPLACE
ZINC ANODES
CLEAN AND
REUSE
NOTE: Electrolysis action is the result of each particular
installation and vessel location; not that of the engine.
If the zinc anodes need replacement, hold the hex boss into
.. which the zinc anode is threaded with a wrench while loos-
ening the anode with another wrench. This prevents the hex
boss from possibly tearing off the exchanger shell. After
removing the Zinc, note the condition of it. If the zinc is in
poor condition, there are probably a lot of zinc flakes within
the exchanger. Remove the end of the heat exchanger and
clean the inside of all zinc debris. Always have a spare heat
exchanger end gasket in case the present one becomes dam-
aged when removing the end cover. Replace the gasket (refer
to your engine model's heat exchanger end gasket part num-
ber), O-ring and cover, and install a new zinc anode.
NOTE: The threads of the zinc anodes are pipe threads and
do .not require sealant. Sealant should not be used as
it
may
insulate the zinc from the metal of the heat exchanger hous-
ing preventing electrolysis action on the zinc.
Heat Exchanger Service
After approximately 1000 hours of operation, remove, clean
and pressure test the engine's heat exchanger. (Aloca! auto-
motive radiator shop should be able to clean and test the heat
exchanger.)
NOTE:
Operating in silty and/or tropical waters may require
that a heat exchanger cleaning be peifonned more often than
every 1 DOlt
hour •.
AIR INTAKE
I
SILENCER
DESCRIPTION
A marine diesel engine ronning at 1800 rpm will typically
consume as much as 6,000 cubic feet of air per hour. Not
only most the engine room be well ventilated, the air flow
into the engine must be unrestricted.
AIR INTAKE FILTER/SILENCER
The replaceable canister contains a paper element that should
be inspected every 100 operating hours. Dut in the element'
~an
be shaken off or cleaned with compressed air, however,
If the element is greasy or black with dirt, the canister must
be replaced, cany a spare. . .. .
NOTE: To operate efficiently a diesel engine must intllke a
continuous volume of clear
ail;
Hard starting, an erratic idle,
and black exhaust smoke are all symptoms of a restricted air
intake.
FILTER CARTRIDGE INSTALLATION
Detach the air inlet hose from the air intake. Unplug the
aii:
temperature sensor from the engine harness. Then remove the
bolts that secure the air intiiKe silencer housing to the inlet base .
and remove the housing, screen facing out. Reinstall the
housing to the inlet base. Plug in the air· temperature sensor to
the harness and reconnect the air inlet hose.
NOTE: Regular air filter cartridge maintenance is essential
for proper engine operation. Failure to maintain the air filter
cartridge will result in air obstruction into the engine, causing
poor fuel combustion and resulting in smokey/sooty exhaust
discharge a!ong with lube oil consumption and possible filter
deterioration which could result in internal engine damage.
FILTER CARTRIDGE
#03970
TURN OVER WHEN INSTALLING
17'