Westerbeke 20B TWO Manual de Instalação descarregar pdf (Página 46)

CONTROL

PANEL

TROUBLESHOOTING

MANUAL

STARTER

DISCONNECT

(TOGGLE

SWITCHES)

NOTE:

The

engine

control

system

is

protected

by

a 20

amp

manual reset circuit breaker

located on the engine

as

close as possible

to

the

power

source.

Problem

Probable

Cause

Verification/Remedy

PREHEAT

depressed,

no

panel

indications

1.

Oil

Pressure

switch.

1.

Check

switches

and/or

battery

connections.

fuel

solenoid,

electric

fuel

pump

and

preheat

solenoid

not

energized.

2.

20

amp

circuit

breaker

tripped.

2.

Reset

breaker.

If

it

opens

again,

check

preheat

solenoid

circuit

and

run

circuit

for

shorts

to

ground.

START

SWITCH

DEPRESSED,

no

starter

1.

Connection

to

solenoid

faulty.

1.

Check

connection.

engagement.

2.

Faulty

switch.

2.

Check

switch

with

ohmmeter.

3 ..

Faulty

solenoid.

3.

Check

that

12

yolts

are

present

at

the

solenoid

connection.

4.

Loose

battery

connections.

4.

Check

battery

connections.

5

Low

battery.

5.

Check

battery

charge

state.

NO

IGNITION,

cranks,

does

not

start.

·1.

Faulty

fueling

system.

1.

Check

for

fuel.

2.

Check

for

air

in

the

fuel

system.

2.

Allow

system

to

bleed.

3.

Faulty

fuel

lift

pump.

3.

Replace

fuel

lift

pump.

NOT

CHARGING

BATTERY

1.

Faulty

alternator

drive.

1.

Check

the

drive

belt

and

its

tension.

Be

sure

the

alternator

turns

freely.

Check

for

loose

connections.

Check

the

output

with

a

voltmeter.

Ensure

12V

are

present

at

the

regulator

terminal.

BATTERY

RUNS

DOWN

1.

Oil

pressure

switch.

1.

Observe

if

the

gauges

and

panel

lights

are

activated

when

the

engine

is

not

running.

Test

the

oil

pressure

switch.

2.

High

resistance

leak

to

ground.

2.

Check

the

wiring.

Insert

sensitive

(0-.25

amp)

meter

in

battery

lines

(Do

NOT

start

engine).

Remove

connections

and

replace

after

short

is

located.

3.

Low

resistance

leak

to

ground.

3.

Check

all

wires

for

temperature

rise

to

locate

the

fault.

4.

Faulty

alternator.

4.

After

a

good

battery

charging,

disconnect

alternator

at

output.

If

leakage

stops.

Remove

alternator

and

bench

test.

Repair

or

replace.

TROUBLESHOOTING

WATER

TEMPERATURE

AND

OIL

PRESSURE

GAUGES

If

the

gauge

reading

is

other than what

is

normally indicated

by

the

gauge

when

the

instrument panel

is

energized, the

first

step

is

to

check

for

12

volts DC between the ignition

(B+)

and

the Negative (B-) terminals of the gauge.

Assuming

that there

is

12

volts

as

required, leave the

instrument panel energized and

perfmm the following

steps:

1.

Disconnect the sender wire at

the

gauge and see

if

the

gauge

reads

zero, which

is

the nonnal reading for this

situation.

2.

Remove

the

wire

attached

to

the

sender terminal at

the

gauge

and

connect it

to

ground.

See

if the gauge reads

full

scale,

which

is

the nonnal reading for this situation.

38

If

both of the above

gauge

tests

are positive,

the

gauge

is

undoubtedly OK

and

the problem lies either

with

the

conductor from the sender

to

the

gauge

or

with

the

sender.

If

either of the above gauge tests

are

negative,

the

gauge

is

probably defective and

should

be

replaced.

·

Assuming the gauge

is

OK,

check

the

conductor

from

the

sender

to

the

sender terminal at

the

gauge

for

continuity.

Check

thqt

the

engine block

is

connected

to

the

ground.

Some

starters have isolated

ground

tenninals

and

if

the

battery

is

connected

to

the

starter

(both

plus

and

rninus

temlinals), the ground side

will

not necessarily

be

connected

to

the

block.

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