Westerbeke M-50B Manual de instalación descargar pdf (Pagina 36)

ENGINE

TROUBLESHOOTING

l'1li111_

Probable

Cause

Verillcatlon/Remedy

Battery

runs

down.

1.

Oil

Pressure

switch.

1.

Observe

if

gauges

and

panel

lights

are

activated

when

engine

is

not

running.

Test

the

oil

pressure

sWitch.

2.

High

resistance

leak

to

ground.

2.

Check

wiring.

Insert

sensitive

(0

-

.25

amp)meter

in

battery

lines.

(00

not

start

engine.)

Remove

connections

and

replace

after

short

is

located.

3.

Low

resistance

leak.

3.

Check

all

wires

for

temperature

rise

to

locate

the

fault.

4_

Altemator.

4.

Disconnect

altemator

at

output,

after

a

good

battery

charging.

If

leakage

stops,

remove

alternator

and

bench

test.

Repair

or

replace.

5_

Poor

battery

connections.

5.

Check

cable

connections

at

battery.

Engine

overfleats.

1.

Raw

water

not

circulating.

1.

Broken

or

loose

belt

at

raw

water

pump.

IIOl!:

Shut

engine

down

immed~te\y.

2.

Coolant

not

circulating.

2.

Raw

water

pump

failure.

Check

impeller

-

replace.

2a.

Obstruction

at

raw

water

intake

or

raw

water

filter.

2b.

Thennostat

-

remove

and

test

in

hot

water.

Replace

thermostat.

20.

Loss

of

coolant

~

check

hoses,

hose

clamps,

drain

plug,

etc.

for

leaks.

2d.

Broken

or

loose

belts

-

tighten/replace.

2e.

Air

leak

in

system;

run

engine

and

open

cooling

system

petcocks,

heat

exchanger,

manifold,

etc.

to

bleed

air.

Add

coolant

as

needed.

Exhaust

smoking

problems

1.

Bluesmoke.

1.

Incorrect

grade

of

engine

oil.

la.

Crankcase

is

overtilled

with

engine

oil

(oil

is

blowing

out

through

the

exhaust).

2_

White

smoke,

2.

Engine

is

running

cold.

28.

Faulty

injector

or

incorrect

injector

timing.

3_

Black

or

gray

smoke.

3.

Improper

grade

of

fue\.

3a.

Fuel

bum

incomplete

due

to

high

back

pressure

in

exhaust

Or

insufficient

air

for

proper

combustion

(Check

for

restrictions

in

exhaust

system;

check

air

intake).

3b.

Improperly

timed

fuel

system,

misadjusted

valves

or

poor

compression.

3c.

lack

of

air

-

check

air

intake

and

air

filter.

Check

for

proper

ventilation.

3d.

Ove

noad.

3 •.

Propeller.

Transmission

will

not

shift

in

or

out

1.

Transmission

failure.

la.

Check

cable

connections

at

steering

station

and

at

of

gear,

or

drive

the

vesse\.

transmission

lever.

lb.

Check

transmission

fluid.

le.

Check

shaft

couplings

or

engine

damper

plate.

ld.

Check

engine's

damper

plate.

Excessive

vibration

1.

Faulty

engine

alignment

1.

Check

the

shaMransmission

coupling.

1a.

Inspect

all

engine

mounts.

2_

Cutless

beanngs,

support

strut

and

2.

Inspect

propeller

and

shaft.

propeller

could

all

be

suspect.

30

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