Westerbeke 65B-FOUR Manual de instalación descargar pdf (Pagina 20)

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 pre-

vents coolant from flowing (some coolant is by-passed

through a hole in the thermostat to prevent the exhaust

manifold from overheating).

the engine warms up, the

thermostat gradually opens.

The

thermostat is accessible

and can be checked, cleaned,

replaced easily. Carry a

spare

thel.mostat and gasket.

REPLACING

THE

THERMOSTAT

Drain

off

some

coolant: Release the coolant pressure cap

and drain the coolant to the approximate level off the

thermostat housing. This can be done using the

heaL

exchanger drain plug.

Rotate

the

thermostat

assembly: Loosen the hose clamp

as shown and remove the three allen screws that hold

down the thermostat housing cover, the assembly can now

be twisted enough to access the gasket and thermostat.

3. Remove/replace

the

gasket

and

thermostat:

When

installing the new parts, apply a thin coat

sealant on

both side

the gasket before pressing it into place.

HEAT

EXCHANGER

•

~le

~t:

Thm

the

cover

back

ffito

place

and

"...::::::::::-:

r tighten the three screws.

not over-tighten! Tighten the

THERMOSTAT

ASSEMBLY

GASKET

SEAL

WITH

HI-TACK

COOLANT

TEMPERATURE

SWITCH

hose clamp and tighten the drains. Top off the coolant and

run the engine. Check for normal temperature and for any

leaks around the thermostat assembly.

THERMOSTAT

HOUSING

CAUTION:

The

engine

~pust

allowed

cool

down

before

attempting

these

procedures.

Not

only

the

surface

the

engine

hot

but

coolant

temperatures

can

190•

THERMOSTAT

HOUSING

COVER

Engines & Generators

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 63 64

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Westerbeke 65B-FOUR Manual de instalación Pagina 20

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