Westerbeke BCD 4.4KW Manual do Operador descarregar pdf (Página 51)

COOLANT

RECOVERY TANK

Coolant Recovery Tank, Recommended Installation

Fill

the fresh water system as follows:

Remove the pressure cap from the manifold.

Pour a clean, antifreeze mixture into the manifold and allow enough time

for

the coolant

fill the fresh

water

COOling

system.

Start the engine and allow it

come

its operating temperature. Monitor the coolant in the manifold

and add antifreeze coolant as air is

expelled. Once all air is expelled from the system, fill the manifold

the filler neck and install the pressure cap.

Remove the plastic cap from the plastic coolant recovery tank and fill the tank with coolant halfway be-

tween the

ADD

mark and the

MAX

mark. Replace the plastic cap.

Run the engine and observe the coolant's expansion flow into the plastic recovery tank.

Check

for

leaks between the pressure cap/filler neck and then plastic recovery tank. Stop the engine and

allow it

cool. Coolant should be drawn back into the cooling system as the engine's temperature comes

down.

Add coolant

the recovery tank, as required,

top

off the fresh water coolant system.

Thermostat

Generally, thermostats are of

two

types. One is simply a choking device which opens and closes as the

engine's temperature rises and

falls. The second type has a bypass mechanism. Usually this is a disc on

the bottom of the thermostat which moves downward

close off an internal bypass passage within the

head.

Since 1980, each type of thermostat has a hole punched through

it.

The hole is a bypass

prevent

the exhaust manifold from overheating during the engine's warm-up. Replacement thermostats must have

this design characteristic.

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