Westerbeke 20B TWO Installationshandbuch PDF herunterladen (Seite 35)

GLOW

PLUGS

DESCRIPTION

The

glow

plugs

are

wired

through

the

preheat solenoid.

When

PREHEAT

pressed at the control panel

this

solenoid

should

"click"

and

the

glow

plug

should

begin

get

hot.

INSPECTION

inspect

the

plug, remove the electrical terminal connec-

tions,

then

unscrew or unclamp each

plug

from

the

cylinder

head. Thoroughly clean each plug's

tip

and

threads with a

soft

brush

and

cleaning solution

remove

all

the

carbon

and

oil

deposits.

While cleaning, examine

the

tip

for wear

and

bum

erosion;

if it

has

eroded

too

much,

replace the

plug.

TESTING

accurate

way

test glow

plugs

with

ohmmeter.

Touch

one

prod

the glow plug's

wire

connection,

and

the other

the

body

of the glow

plug,

shown.

A good

glow

plug

will

have

1.0-

1.5-ohm

resistance. This

method

can

used

with

the

plug

out of the

engine.

You

can

also

use

ammeter

test

the

power drain

amps

per

plug).

WARNING:

These

Jllow

plugs

will

become

very

hot

the

touch.

carefulnot

bum

yOiJr

ling~·

When

testing

the

plugs

· · · · ·

Re-install

the

plugs

the

engine

and

test

them

again.

The

plugs

should

get

very

hot

(at

the

terminal

end)

within

seconds.

If the

plugs

don't heat

quickly,

check

for

short circuit.

When

reinstalling the

glow

plugs,

use

anti-seize

compound

the

threads.

Glow

Plug

Tightening

Torque

7 ·11 lb·ft

(1.0

·1.5

kg·m)

WARNING:

not

keep

glow

plug

for

than

seconds

TERMINAL

END

Tightening

torque:

(1.0

-1.5

m-kg

...

llft-lb)

TIP

GLOW

PLUG

THE

OHMMETER

TEST

GLOW

PLUG

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 71 72

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