Westerbeke BCD 4.4KW Manual del operador descargar pdf (Pagina 40)

Priming the Fuel System

The

Westerbeke

self-bleeding

fuel

system

is

semiautomatic

in

operation.

The

self-bleeding feature of the

fuel

system

allows for

easy

servicing of the

fuel

filters.

Simply

remove

the

and

replace

the filter

elements

(take

care

in

catching any

fuel

that may drain out of the

fuel

filtering

assemblies)

as

described

in

the

"Replacing

the

Fuel

Filter

Elements"

section

below.

Energize

the

PREHEAT

switch

and

allow the electric

fuel

pump to

operate for

20

to

30

seconds to prime

and

bleed

air from

the

system.

(No

fittings should

be

opened.)

Then

proceed to start the

engine

as

you

normally would. If the

engine

does not

start,

stop

and

wait a

few

mo-

ments,

and

then

repeat

the

bleed

procedure

as

indicated

above.

When

the

PREHEAT

switch

is

depressed,

the preheat

elements

(the

glow

plugs)

are

energized,

so

take

care

not to over

heat

them.

CAUTION

Prolonged cranking intervals without

the

engine

starting

can

result

in

filling the engine-mounted

exhaust

system

with

sea

water coolant.

This

may

happen

because

the

sea

water pump

is

pumping

sea

water through

the

sea

water cooling

system

during cranking.

This

sea

water

can

enter the engine's cylinders by

way

of

the

exhaust

manifold once the exhaust

system

fills.

Prevent

this from happening by closing

the

sea

water supply through-hull shut-off, drain the

exhaust

muffler,

and

correct

the

cause

for the

excessive

engine

cranking

needed

to obtain a

start.

Engine

damage resulting from this type of

sea

water entry

is

not a warrantable

issue;

the owner/operator

should

keep

this

in

mind.

ReplaCing the Fuel Filter Elements

While

it

is

unlikely that the operator will

be

forced to

service

the

system

at

sea,

the possibility does

exist.

Therefore,

it

is

recommended

that banjo

washers,

injector

seat

washers,

electric lift pump filter

and

gasket,

fuel

filter

and

gasket

be

carried

on

board

at

all

times.

Select

the parts for your

engine

from the

Parts

List

and

purchase

spares

from your local

Westerbeke

Dealer

or Distributor. For

example,

hardware kit #33093

in-

cludes replacement

elements

with

gaskets

(items

#6,

8,

20,

21).

If a leak should develop at a

fuel

banjo or

sealing

washer location that cannot

be

remedied

by

a

slight tightening of

the

filter cup

retainer,

replace

the

fil-

ter along with the O-rings supplied with

the

new

filter.

After the first

50

hours of operation, loosen

retainer

ring

#

23

and

discard filter

element

#

21.

Clean

bowl

#

22

and

install a

new

filter

using

a

new

#

20

gasket.

Be

careful

to

catch any fuel that

may

spill

from

within

these

fuel filter assemblies.

This

same

service

is

required

of

the

# 6 filter

element

in

the electric

fuel

lift

pump.

Similarly,

install a

new

# 6 filter

element

along

with

a

new

# 8

gasket.

The

base

of

the

electric

fuel

pump

is

removed

with the

aid

of

an

open

end

wrench.

Twist

the

base

off the pump's locking tabs

and

reinstall

the

base

by twisting it back

on

the

locking

tabs.

Place

the

wrench

on

the

hex

nut cast into the

base.

After the first 50-hour

change,

the

change

period

may

be

increased

to

200

hours or once per

season.

37

~

I

8

23

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