Westerbeke 20B TWO Manual de instalación descargar pdf (Pagina 23)

COOLING

SYSTEM

THERMOSTAT

A thermostat, located near the manifold at the front

the

engine, controls the coolant temperature as the coolant

continuously flows through the closed cooling circuit.

When

the engine is first started, the closed thermostat prevents

coolant from flowing (some coolant is by-passed through a

hole in the thennostat to prevent the exhaust manifold from

overheating). As the engine

wanns

up, the thermostat

gradually opens.

The

thermostat is accessible and can be

checked, cleaned,

replaced easily. Carry a spare thermostat

and gasket

A coolant recovery tank allows for engine coolant expansion

and

contraction during engine operation, without any signifi-

cant

loss

coolant and without introducing air into the cool·

ing

system. This tank should

located at

above the

engine manifold level and should

easily accessible.

COOLANT

RECOVERY

TANK

FROM

COOLANT

RECOVERY

TANK

KEEP

THE

COOLANT

PASSAGE

CLEAR

COOLANT

EXPANSION

PRESSURE

/CAP

COOLANT

RETRACTION

Replacing

the

Thermostat

Remove the cap screws and disassemble the thermostat

housing as shown. When installing the new thermostat and

gasket, apply a thin coat

sealant

both sides

the

gasket before pressing it into place.

not over-tighten the

cap screws.

Run

the engine and check for normal temperatures and that

there are

leaks

the thermostat housing.

THERMOSTAT

ASSEMBLY

GASKET

SEAL

WITH

HI-

TACK

WATER

TEMPERATURE

SWITCH

CAUTION:

The

engine

must

allowed

cool

down

before

attempting

these

procedures.

Not

only

the

surface

the

engine

hot

but

coolant

temperatures

can

190°

Engines

Generators

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 71 72

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Westerbeke 20B TWO Manual de instalación Pagina 23

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