Extra Information

ManualsBrandsVolvo ManualsMotorPenta 2003

1

2

3

4

5

6

7

8

9

Replacing

the

valve

seat

exhaust

port

2003T

Grind

down

the

valve

disc

of

a

discarded

valve

to just

below

27

mm

(1

.063

in)

diameter

.

Push

the

valve

stem

through

the

guide

.

NOTE!Do

not

push

in too

far-

the

valve

disc

should

be

just

below

the

edge

of the

seat

.

Spot

weld

the

disc

in

place

at

three points using

a

electric

welder

.

Knockout

the seat

by

hitting

the

valve

guide

with

a

plastic-headed

hammer

.

Cool

the

new

seat

to

approx

.

-20°C

(-4°F)

;

the

cylinder

head

should

beat

room

temperature

(+

20°0168°F)

.

Place

the

cooled

seat on

tool

884961-4

and

knock

it

down

until

it

bottoms.

NOTE!

Turn

the seat

with

the

valve

face

towards

the

tool

.

Valve

springs

5

.

Checkthe

free

length

of

the

valve

springs

and

the

length

when

loaded

.

L =

Length,

unloaded

42,5

mm

(1

.67323

in

.)

L

1 =

Length,

loaded

with

170±10N

(17±1

kp)

32

mm

(1

.25984

in

.)

L

2

=

Length,

loaded

with

300±20

N

(30±3

kp)

24

mm

(0

.94488

in

.)

Rocker

arm

mechanism

6

.

Disassemble

the

rocker

armmechanism

and

clean

the

parts

.

Check

the

wear

of

the

shaft

and

rockerarm

bush

i

ngs

.

Should

the

bushings

need

to

be

replaced,

usethe

mandrel

p/n

9991867

for the

removal

and

installation,

(make

sure

that

the

oil

hole

in

the

bushing

coincides

with

the

one

in

the

rocker

arm)

.

After

the

installation

the

bushings

are

reamed

to

a

close

running

fit

. When

installing

the rockerarm shaft,

it

must

beturned

so

that

the

lubrication

holes

are

facing

the

valve-side

.

Check

to

make

sure

that the

rocker

arm

contact

surface

againstthe

valve

is

concave

.

Minor

adjustments

are

made

in

a

valve

grinding

machine

.

Oil

the

shaft

and

install

the

parts

.

Pressure

testing

the

nozzles

7

.

Check

the

nozzle's

spray

pattern

at

the

correct

opening

pressure

(see

Technical

Data)

.

Check

also that the

fuel

sprays

stop

simultaneously

and

no

dripping

occurs

.

Adjust

the

opening-pressure

with

adjustment-washers

(1)

being

available

in

different

thicknesses

from

1

mm

U3937

in

.)

to 1,95

mm

(

.076772

in

.)

in

steps

of

0,05

mm

(

.001969

in

.)

.

Disassemble

the

injector

and

replace

the

adjustment-washer

againstathinneroneorathickeronedependingon

whether

the

pressure

must

be

reduced

or

increased

.

Assemble

the

injector

and

check

the

opening-pressure

and

the

spray-pattern

.