Weifang 495 - Inspection and Adjustment of Injection Pump and Governor

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idiing

gear

should

be

staggered

relatively

by

one

tooth.

Viewing

from

the

front

end

of

the

injection

pump

,rotate

the

injection

pump

timing

ge~r

in

clockwise

direction,

the

delivery

advance

angle

will

be

enlarged,

while

in

the

contrary,

it

will

be

reduced.

Stag.gering

I,.~

the

gears

by

one

tooth,

the

fuel

d~livery

timing.

will

be

changed

by

18°.

c.

Inspection

and

Adjustmel~t

of

Injection

pump

and

Governor

The

injection

pump

and

the

governor

are

the

important

com-

ponents

of

the

engine

fuel

system,

whose

working

condition

will

d.irectly

affect

the

performance

and

service

life

of

the

engine,

there-

fore,

it

is

not

allowed

to

dismantle

them

optionally

in

normal

case.

The

inspYfting

flushing

,replacing

and

repairing

as

well

as

testing

and

adjusting

the

injection

pump

and

the

governor

may

be

done

on-

ly

when

they

are

out

of

order.

Insp~cting

and

adjusting

the

injection

pump

and

the

governor

should

be

undergone

on

a

special

test

bench

and

done

by

a

well-

trained

skillful

worker.

8

..

r...Jotice

on

dismantling

and

assembling

the

injection

pump

a.nd

the

gavenor.

a).

These.

work

should

be

·taken

in

the

certain

sequence.

b).

The

important

components

should

be

dismantled

and

as-

sembled

with

special

tools.

c).

All

the

parts

,especially

the

plunger

,delivery

valve

assem-

blies

and

other

precise

parts

must

be

washed

thoroughly

in

clean

diesel

fuel

before

reassembly.

The

primary

and

secondly

washes

are

taken

in

the

different

contain~rs.

The

precise

parts

should

not

be

placed

together

with

the

other

parts

or

wiped

cotton

waste.

d).

The

precise

mating

parts

are

selectively

assembled

in

cou-

ple

and

the

part

.of

on~

are

not

interchangeable

with

that

of

anoth-

55

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