Westerbeke 38B FOUR Operator's Manual download pdf (Page 56)

COOLANT RECOIIERY TA"I<

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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

to come up

its operating temperature. Monitor the coolant in the manifold

and add antifreeze coolant as air is expelled.

Once all air

expelled from the system, fill the manifold to

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

cool. Coolant should be drawn back into the cooling system

the engine's temperature comes

down.

Add coolant

the recovery tank, as required, to top off the fresh water coolant system.

Thermostat

Generally, thermostats are of

two

types. One

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

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

a bypass

prevent

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

this design characteristic.

Westerbeke

Diesel

Engines

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 107 108

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Westerbeke 38B FOUR Operator's Manual Page 56

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