Westerbeke 38B FOUR Manual del operador descargar pdf (Pagina 79)

Operation

A

pressure

drop

warning

light

is

mounted

on

the

instrument

panel

on

V-drives

equipped

with

an

oil

cir-

culating

pump.

The

warning

light

will

stay

on

until

the

boat

gets

under

way

and

the

engine

speed

increases

to

suf-

ficient

RPM

for

the

pump

to

maintain

pressure.

This

normally

occurs

at

approximately

1200

RPM,

but

the

actual

speed

may

vary

by

as

much

as

400

RPM.

Extended

cruising

at

low

RPM,

such

as

when

trolling,

is

not

harmful

to

the

V-drive,

even

though

the

warning

light

may

stay

lit.

Normal

operation

is

between

6

to

12

PSI.

The

light

will

go

on

when

the

oil

pressure

drops

below

2

PSI.

Loss

of

oil

and/or

insufficient

oil

level

are

the

major

causes

of

pressure

drop.

The

oil

level

should

immediately

be

restored,

and

while

running

the

boat,

the

unit

should

be

checked

for

leaks.

If

the

oil

level

is

normal

and

the

light

stays

lit

when

the

boat

reaches

normal

cruising

speed,

the

wir

ing

should

be

checked

for

loose

and/or

corroded

connections.

If

the

wiring

is

correct

and

the

light

remains

lit,

the

#49

pressure

drop

switch,

which

is

mounted

on

the

side

of

the

V-dr

i

ve

(see

illustration),

should

be

checked

for

proper

oper

ation.

The

switch

can

easily

be

removed

and

an

accurate

oil

pressure

gauge

installed

in

its

place.

If

the

pressure

is

normal,

the

switch

should

be

replaced.

If

the

pressure

is

below

normal,

the

oil

lines

should

be

checked

for

blockage.

The

pump

should

be

inspected

and

replaced

if

necessary.

The

pump

is

standard

on

the

RV-48

and

an

optional

feature

on

other

models

(not

available

on

the

RV-IO).

The

oil

level

should

be

checked

several

times

during

the

season,

especially

on

V-drives

whitout

pumps

(see

OIL

FILL).

A

clatter

or

rattle

in

the

V-drive

at

low

RPM

is

due

to

the

over-

riding

of

the

propeller

during

the

compression

stroke

of

the

engine.

Although

annoying,

it

is

not

harmful.

It

may

be

reduced

by

adjusting

the

idle

speed

and/or

tuning

up

the

engine

for

smoother

operation.

Maintenance

1.

OIL

CHANGE

AND

JOINT

LUBE

After

the

first

100

hours

of

operation

and

every

season

and/or

500

hours

thereafter,

the

oil

should

be

changed.

Run

the

boat

to

warm

up

the

V-drive

to

operating

temperature.

Turn

off

the

engine.

Remove

the

plug

in

the

#6B

bottom

cover

that

is

opposite

the

#438

oil

strainer.

Reinstall

after

draining.

Disconnect

the

oil

hose

leading

from

the

#438

strainer

(leave

the

elbow

on

the

strainer).

Unscrew

the

strainer

and

clean

the

outside

surface.

Reinstall

the

strainer

and

reconnect

the

oil

hose.

Unscrew

the

two

#22

magnetic

plugs

that

are

located

on

diagonally

opposite

corners

of

the

#lC

main

housing.

77

Westerbeke Diesel Engines

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