Installation manual

ManualsBrandsWesterbeke ManualsAutomotive108B

COOLING

SYSTEM

THERMOSTAT

A thennostat,

located

near

the

manifold

at

the

front

of

the

engine,

controls

the

coolant

temperature

as

the

coolimt

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

thermostat

to

prevent

the

exhaust

manifold

from

overheating).

As

the

engine

warms

up,

the

thermostat

gradually

opens.

The

thermostat

is

accessible

and

can

be

.

checked,

cleaned,

·or

replaced

easily.

Carry

a

spare

thermostat

and

gasket

Replacing

the

Thermostat

Remove

the

cap

screws

and disassemble the

therrrio~tat

housing

as

shown.

When

installing the

new

thermostat

and

gasket,

apply

a thin

coat

of sealant

on

both

sides

of the

gasket

before

pressing

it into

place.

Do

not

over-tighten

the

cap

screws.

Run

the

engine

and

check

for

normal temperatures

and

that

there

are

no

leaks

at

the thermostat housing.

AIR

BLEED

P~~~/~~~~;;;;~~~

FOR

PUSHING

AIR

FROM

THE

COOLING

SYSTEM

COOLANT

TEMPERATURE

SENDER

RAW

WATER

INTAKE

STRAINER

NOTE:

Always install

the

strainer

at or

below

the

waterline

so

the

strainer

will

always

be

self-priming.

A clean

raw

water

i,ntake

strainer

is

a vital component of the

engine's

cooling

system.

Include

a visual inspection of this

strainer

when

making

your

periodic

engine

check.

The

water

in

the

glass

·shoufd

be

clear.

. -

Perform

the following

maintenance

after every

100

hours

of

operation:

1. Close the

raw

water

seacock.

2.

Remove

and

clean the

strainer

filter.

3.

Ciean

the

glass.

4. Replace

the

sealing

washer

if

necessary.

5.

Reassemble

and

install

the

strainer.

6.

Open the seacock.

7.

Run

the

engine and

check

for

leaks.

NOTE:

Also follow

the

above

procedure

after having

run

hard

aground.

If

the engine temperature

gauge

eyer

shows a higher

than

.

normal

reading,

the cause

may

be

that silt,

leaves

or

grass

may

have

been

caught

up

in

the

strainer,

slowing

the

flow

of

raw

water through the

cooling

system.

WASHER

HI-TACK

SEALANT

THERMOSTAT

ASSEMBLY

THERMOSTAT

PART

NO.

47571

FILTER

BY·PASS

HOLE

TYPICAL

RAW

WATE:;Riiii~;

(OWNER

INSTALLED)

INCOMING

RAW

WATER

SEACOCK

-r'li(l"

~

...v

WESTERBEKE

Engines· & Generators

17

INSPECTAND

CLEAN

EVERY

100

HOURS