Westerbeke 55A FOUR Installationshandbuch PDF herunterladen (Seite 37)

ENGINE

TROUBLESHOOTING

(Continued)

Ensure

volts

are

present

the

"R"

terminal.

Problem

Probable

Cause

Verification/Remedy

Battery

runs

down.

Oil

pressure

switch.

Observe

gauges

and

panel

lights

are

activated

when

en-

gine

not

running.

Test

the

oil

pressure

switch.

High

resistance

leak

ground.

Check

wiring.

Insert

sensitive

(0-.25

amp)

meter

battery

lines.

(Do

not

start

engine.)

Remove

connections

and

re-

Low

resistance

leak.

place

after

short

located.

Check

all

wires

for

temperature

rise

locate

the

fault.

Alternator.

Disconnect

alternator

output,

after

good

battery

charging.

leakage

stops,

remove

alternator

and

bench

test.

Repair

replace.

Poor

battery

connections.

Check

cable

connections

battery.

Engine

overheat.

Raw

water

not

Circulating.

Broken

loose

belt

raw

water

pump.

NOTE:

Shut

engine

down

immediately.

Coolant

not

circulating.

Raw

water

pump

failure.

Check

impeller

replace.

2a.

Obstruction

raw

water

intake

raw

water

filter.

2b.

Thermostat

remove

and

test

hot

water.

Replace

thermostat.

2c.

Loss

coolant

check

hoses,

hose

clamps,

drain

plug,

etc.

for

leaks.

2d.

Broken

loose

belts

tighten/replace.

2e.

Air

leak

system;

run

engine

and

open

cooling

system

petcocks,

heat

exchanger,

manifold,

etc.

bleed

air.

Add

coolant

needed.

Exhaust

smoking

problems.

Blue

smoke.

Incorrect

grade

engine

oil.

1a.

Crankcase

overfilled

with

engine

oil

(oil

blowing

out

through

the

exhaust).

White

smoke.

Engine

running

cold.

2a.

Faulty

injector

incorrect

injector

timing.

Black

gray

smoke.

Improper

grade

fuel.

3a.

Fuel

burn

incomplete

due

high

back

pressure

exhaust

insufficient

air

for

proper

combustion.

(Check

for

re-

strictions

exhaust

system;

check

air

intake.)

3b.

Improperly

timed

injectors

valves

poor

compression.

Transmission

will

not

shift

out

Transmission

failure.

1a.

Check

cable

connections

steering

station

and

trans-

gear,

drive

the

vessel.

mission

lever.

1b.

Check

transmission

fluid.

1c.

Check

shaft

couplings

engine

damper

plate.

1d.

Check

drive

damper

Transmission

oil

cooler

failure.

2a.

Replace

oil

cooler.

TROUBLESHOOTING

WATER

TEMPERATURE

AND

OIL

PRESSURE

GAUGES

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

volts DC

between the ignition (B+) and the Negative

(B-)

terminals

the gauge.

Assuming that there is 12 volts as required, leave the

instrument panel energized and perform the following

steps:

Disconnect the sender wire at the gauge and see

the

gauge reads zero, which is the normal reading for this

situation.

2. Connect the sender terminal at the gauge to ground

and see

the gauge reads full scale, which is the

normal reading for this situation.

both

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.

either

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 that the engine block is connected to the ground.

Some starters have isolated ground terminals and

the

battery is connected to the starter (both plus and minus

terminals), the ground side will not necessarily be

connected to the block.

1"VV1 WESJERBEKE

Engines

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