Juki DLD-432 Instruction Manual

MODEL

DLD-432

HIGH
DIFFERENTIAL

INDUSTRIAL

SPEED,

SINGLE

FEED,

SEWING

NEEDLE,

LOCKSTITCH

MACHINE

Instruction

Book

TOKYO

JDKI

a

a

INDUSTRMl

CO„ITO.

We

want to thank you for purchasing JUKI

Lockstitch Industrial SewingMachine.

This is a high

up to 4,200

it can

perform

straight

This is a

garments

or

shrinking

hi^

levelofsewing

INSTRUCTION BOOK thoroughly and digest the functions of all of its mechanism to

produce best results and to prolong the lifeofthe machine.

speed,

s.p.m.

sewing

machine

of light

nature. As a

differential

As this

stretch

stitchingorgather

with equal ease to boost up the

for

wide

weight

area of

to mediumheavy

differential

efficiency.

feed

machine

usage
feed

Before

DLD-432,

sewing

machine,

is equipped with a differential feed

stitching

sewing

and best suited for

weight

materials as

machine,

you start to use this

High

Speed, Differential Feed,

capableofattainingaspeed

with

utmost

ease.

efficiency.

Also,

sewing

well

it can be

asmaterials of stretchy

acclaimedtoproduce

machine,

various

please

mechanism,

it can

kinds

read the

perform

very

of

of

DLD-432

SPECIFICATIONS

Sewingspeed — Up to 4,200 s.p.m.

Differential feed ratio (3:1)

Stitch

length

0-5mm{13/64")

Stitch length regulator • • • • Dial system

Reverse sewing By reverse lever

Needles

Lubricating oil New Defrix Oil No. 1

DBxl (16x231)1738#14, #16, #18

DLD-432

CONTENTS

Page

Installing the oil reservoir 2

Motor

pulley

and

the

belt

Cautions on operating the machine 3

Lubrication

1. Adjusting

the

oil supply to

the

face

part

2. The oil-adjusting pin 4

3. Adjusting the oil supply to the

hook

components 4

Threading the machine 5
Preparation

of

the bobbin thread 6

Inserting &removing the bobbin case 6

Windingthe bobbin thread 6

Howtoinsert

The

thread

tension

the

bobbin

Adjusting the needle thread tension 7

Thread take-up spring 7

Adjusting the bobbin thread tension 7

Presser

foot

and feed dog 8

Adjusting the pressure of the presser foot 8

The presser foot hand lifter 8

Heightof the feed dog 8

The stitch length 9

Adjusting the stitch length 9
Reverse sewing 9

Pushing pressure of the feed lever 9

Adjusting the differential feed 10

Stretch
Gather

Inserting

Installing

Relation

sewing

sewing 10

the

needle

and

removing

between

the

hook

the

sewing

and

the

hook

needle

10

11

11

12

Adjusting the heightofthe presser bar 13

Adjusting the amountofthe thread take-up 1:

How to use

attachments

(separate order) 1

How to use the differential feed regulating lever • 1

How to use attachmentfor gather sewing 1

Supplementary feed dogs (reverse toothed) 1^

2

3

4

6

7

(Note)

Due to improvements on the machine, some
INSTRUCTION BOOK might be changed

without

partsofthe

- I -

notice.

operational proceduresofthis

INSTALLING

THE

OIL

RESERVOIR

Nail

Operatorside

MOTOR

Motor

Rubber

pulley

cushion

Oil

reservoir

Q

PULLEY

i-

HinRe

AND

m

side

THE

As shown in the

such a way so

flgure>

that

set the reservoii in

the4comersofthe

ed part of the table will be supporting the

reservoir.

1.

Nailinthe2rubber

the

protruding

cushionsinfront

partofthe table.

2. Place the oil reservoir on the protruding

partofthe

table.

BELT

Model DLD-432 can sew at a high
up to

4,200

s.p.nt. When

to the power

(1/2

HP)

clutch

sourc^^'"

motor.

Use a M type V-belt. The relation between

the

number

the

dimensionofthe

the

table,

♦The

means
center
around

ofiTOtationofthe

(effective

effective

the

diameter

of

the

V-belt

the

machine.

diameterofthe

connected

use a 3-phase 400 W

motor

pulleyisshown

diameter)

as

measured

when

the

groov

speed

directly

machine

motor

beltiswound

with

pulley

from

to

of

in

the

Cycle

50

GO

No.ofrotation

of

machine

4,210

s.p.m.

3,790

s.p.m.

4,270

s.p.m.

3,760

s.p.m.

Part

motor

MTK-PVl

^1TK-PQP90000

MTK-PV085000

MTK-PV075000

- 2

No.

pulley

of

00000

Effective

of

motor

100

mm(3-15/16")

90 mm (3-3

85

mm(3-11/32")

75 mm

diameter

pulley

5/64")

(2-61/64")

CAUTIONS ON OPERATING THE MACHINE

®

Do

not

run

the

machine,

with

fresh

oU.

(D

Always

verse

(3)

This

LUBRICATION

rotate

the

direction.

machine

the speed to about 3,700 s.p.m.

can

under

any

circumstances,

machine

run

toward

the

withaspeedofupto4,200

before

operator.Donot

s.p.m.

the

run

but

oil

reservoirisfilled

the

machineinthe

for

the

first

month

up

re

drop

Before operating

1. Fill up the oil reservoir with JUKI New
Defrix Oil No.l up to the mark "HIGH".

2.

Watch

and

go below the "LOW" mark.

HIGH

mark

Oil

sight

0

m:D-49ai

LOW

mark

window

Oil

reservoir

3.

Under

chine is

oil will spurt against the oil sight window.

(Caution)

1) When the oil gets dirty, change it with new,

fresh oil. If the oil plug of the reservoir is

removed,

2)

When

the machine is to be run for the first

time or when it was idle for a great length

of time, run the machine at 3,000-3,500

s.p.m. for about 10 minutes and allow the

machine to get well-oiled.

see

normal

run

oil will

the

machine

that

the

oil

level

conditions,

after

it is filled up with oil, the

come

when

out.

does

the

not

ma

- 3 -

Oil

Oil

gets

z

adjustiiig

pin

amount

less

rmr

I—n

Oil amountgets more

Needle

bar

crank

Grooveofeccentric

Oil

adjusting

Counterweight

pint |

Arm

shaft

Oil adjusting pin

Crank

I f

h)

II

screw

1. Adjusting the oil supply to the face

part

When

adjusting the oil supply to the thread

take-up

remove

ing

justingpin at the tip of the main shaft.

1. When the mark of the adjusting pin comes

2.

(Caution)

The

ately

have

2. Theoil

1.

2.

3. The mark on the oil adjuster shows the

and

needle

bar

crank

components,

the

face

plate

plate and the oil

and

adjustbyturning

near the crank, the oil amount gets less.

When

the mark comes to the opposite side

of the crank, the oil amount gets more.

oil

amount

after

thisinmind.

The

oil

as

shown

and the oil hole of the main shaft come

does

not

the

adjustment,sowhen

adjusting
adjusting

in the

pin

pin

hasacarved

figure.

change

When

prevent

the oil ad

immedi

adjusting,

groove

this

groove

together, the oil amountgets more.

When

the

groove

is at the

the oil hole, the oil amount gets

side without the carved groove.

opposite

less.

side

of

"Oil

regulating

valve

3. Adjusting the oil supply to the hook

components

The

supply

- 4 -

of oil to the

can be

adjusted

the

hook

1. If this

the oil amount gets more.

2. If this

amount

by the oil

shaft

valveisturned

valve

is turned to © side(left), the

gets

less.

hook

regulating

toward

components

valve

on

@side(right),

THREADING THE MACHINE

Rotate

the

hand

1.

2.

3!

Pass

Pass

PuU

the

needle

the

thread

out

about10cm

wheeltoright

thread

to the

and

inthe

order

needle

eye

(4")ofthe

place

from

thread

0

the

shown

leftto right

from

thread

bythe

the

take-uptothe

figure.

needle

eye.

highest

position.

0

- 5 ~

PREPARATION

<9

W/

-1

case

tfuKO

^

Bobbin

OF

^

THE

\

BOBBIN

\

Hook

THREAD

Inserting& removingthe bobbin case

1. Rotate the hand
bringthe

2. Tilt the

3. Lift up the knob of the bobbin case and

• If

bobbin

machine

supportonthe

takeitout.

you

hold

will

4.Toinsert

into the shaft of the hook so that the nose

of the

bobbin

of the hook and then close the knob.

wheel

needle

with your handand

to its

highest

and supportit by thehead

table.

the

knobinopen

not

fall

bobbin

case

off.

fully

case,

enters

the

position.

condition,

insertitdeep

the

groove

Trip

latch

Adjusting

screw

Thread passinghole

Thread

Tension

base

mouth

disc

Winding

1. Set the bobbin winder to the table with

2. Pass the thread in the order shown in the

3. Knock down the trip latch and contact the

4.

5.

6.

HowtoInsert

the

bobbin

screws.

figure and wind it around the bobbin sever

al

times.

pulleytothe

Adjust

the

adjusting screw so

When

the thread is wound

the thread

correcttoeven winding

When

the

latch

willbereleased

stop

automatically.

thread

belt.

winding

tension

amount

that

disc

about

base

condition.

windingiscompleted,

and the

the

bobbin

1. Holdthe bobbinand insert it to the bobbin

case

so that the thread

condition.

2.

Pass

the

of

the

3.

Then

the

thread

out

through the thread

threadtothe

bobbin

pull

the

tension

case.

thread

will

thread

anditwill

spring

mouth.

and

by the

winding

80% is wound.

unevenly,

move

to right and

the

pulley

bein

right-twist

passing

hole

pass

under

canbepulled

trip

will

- 6 -

THE

THREAD

TENSION

Moving

range

Thread

Weaker

Thread

tension

Thread tension nut

take-up

spring

bar

Tension

set

screw

Stronger

bracket

jI

Adjusting

Ideal

thread

interlockedatthe

The

by

the

stitches

and

the

tensionofthe

the

thread

needle

are

formed

bobbin

centerofthe

needle

tension

thread

tension

when

thread

cloth.

threadisadjusted

nut.

the

needle

are perfectly

1. Turn it to right to make the tension stronger

andtothe

Thread

* To change

lefttomakeitweaker.

take-up

spring

the

moving rangeofthe

thread

tension spring;

Loosen

bracket.

Rotate

To change

the

the

thread

the

screw

of

tension

strengthofthe

the

bar.

thread

thread

tension

take-

up spring.

Loosen

tension

Loosen

and

When

right,
turned

the

set

bar.

the

screw,

thread

adjust

the

thread

tension

the

spring will get stronger

to left, it will

remove

tension

get

the

bar

baristurned

weaker.

Thread

bar

set

thread

screw

and

tension

set

to

screw

if

Adjusting

screw

Thread take-up spring

Adjusting

Rotate

case to adjust the

the

the

thread

bobbin

tension

bobbin

1. Rotate it to right to make the bobbin

tension stronger and to

weaker.

- 7 -

thread

screwofthe

thread

left

tension

bobbin

tension.

thread

to make it

PRESSER

FOOT

AND

FEED

DOG

Pressure

adjusting

screw

0

^6)

Hand

lifter

—

0

Feeding driving fork

Slide

block

shaft

Differential

feed

dog

base

S

£

sy

0 1

0

jojl

Clamping screw

Main

^slide block

1l

(r

1 I

feed

dog

screwof the|

))^

shaft

base

Adjusting

1. Turn the pressure adjusting screw to right

Normal pressure for general fabric is about

5 kg (11 lbs.).

The presser

To stop :Ae presser foot at the lifted position:

1.

2. The presser

(13/64")

3. To lower the presser foot, activate the knee

lifter

4. With the knee lifter, the presser foot will

Height of

Set the height of the feed dog from

of

the

In sewing

too

To adjust the height of the feed dog:

1. Loosen the clamping screw

2. Move the main feed dog base (right side)

3. After adjusting, tightly tighten the clamping

4.

5. After adjusting, tighten the set screwofthe

the

pressure of

to make the pressure stronger and to left

to

makeitweaker.

foot

hand

Rotate

the

hand

part

either to right or

once

down to the original position.

go up about 10 mm(25/64").

the

throat

li^t

high, shrink-stitching

driving fork.

up

and

down

main feed dog.

screw.

Loosen

shaft and adjust the heightofthe different*

ial feed dog base by rotating the slide block

shaft.

slide

block

lifterinthe

foot

and

stops.

and

the

feed dog

plateto0.7~

weight materials, if this height is

and

the

set

shaft.

the

lifter

left

will go up

presser

0.8 mm.

may

adjust the heightofthe

screw

of

0.7—0.Sam

I

Feed

dog

Throat plate

presser

rearofthe

about

foot

will come

the

result.

of

the

slide

surface

the

foot

face

S mm

feed

block

- 8 -

THE

STITCH

LENGTH

Feed

adjusting dial

Lever

DLP-432J

Adjusting

the

stitch length

The stitch length can be adjusted by turning

the feed adjusting dial above the feed lever.

The figures on the graduator are shown in

mm.

1. Rotate the feed adjusting dial either to right

or

left.

2. And

* The

match

the desired figure with

which is coming

maximum

the

pin

out

from the arm.

stitch lengthis 5mm(13/64")

Reverse sewing

1. For reverse sewing, push the feed lever

down.

2. As long as this lever is

sewing

canbeperformed.

3.

Release

this

lever

turn

to original

position

and

the

kept

feed

and

down,

lever

normal

reverse

will re

straight

stitching can be resumed.

Adjusting nut

Pushing pressureofthe

Irrespective

pull-up spring is

that

released
returntothe

When

the

rotation

of

the

during high speed sewing if the

from

the

original

shorter

of

stitches

the

feed

length

somewhat

feed lever,itwill positively

position.

are

desired

machine

down, it is possible t9 decrease the pushing

pressureofthe

1. When the adjusting

feed lever.

nut

is loosened, the

pressure will become weaker and if the

nut

is tightened, the pressure will become

stronger.

- 9 -

lever

of

stitches,

strengthened

istobe

hand

or

slowed

the

so

is

when

(2)

®

\®\

Adjusting

This machine possesses 2

dog

differential

changestosew

To

follows:

the

differential

and

differential feed dog and by means

feed

regulator, the

stretchorgather

change

the

differential

feed

feed

dogs, main feed

feed

feed

amount

stitchings.

ratio,

do as

1 Loosen the set screw(1) of the differential

feed

regulator base.

2 Move

the

differential

(2) up and down

and

feed

match

regulator

the

indicating

base

line (D with the graduation ® of the

differential

3 If the indicating line is matched to

of

becomes

the

4 When

graduation,

differential feed regulator base.

Stretch

When

this

sewing,
for

stretch

sewing can be

stretch

Make this ratio larger as the stretch nature of

the

material

feed

crank.

the

graduation, the differential ratio

1:2

andifitismatchedto"3",

ratio

becomes

the

1:3.

indicating line is

tighten

the

matchedtothe

set

screwofthe

sewing

machineistobeused

attach

the

feed

dog

and

sewing. (Aofphoto)

performed

sewing

ratioof1:3.

gets

larger.

presser

The

by

the

for

stretch

foot

stretch

maximum

"2"

of

Gather

sewing

When

this

sewing,

machine

attach

(Bofphoto).

formedbythe

When straight sewing

is to be

the feed dog and presser

The gather sewing can be

maximum

ratioof1:3.

and

to be performed alternately, to change

sewing

type,

there

are special

available for this purpose. Please

separately.

-

10

-

used

for

gather

foot
per

gather sewing are

the

attachments

order

them

INSERTING

THE

NEEDLE

Set

screw

Needle

INSTALLING

Feed

ba

Sewing

---il-JLSJ

AND

REMOVING

Bobbincase f

positioning finger

I

-Set

screw

I

Hook

set

Groove

screw

Use DB X 1 needles.

and

sizesofthe

There

needle,

but

are

select

many

numbers

the

correct

size and number depending on the thickness of

the thread or kindsofsewing material.

1. Rotate the hand wheel and bring the needle

bar to the highest position.

2. Loosen

3. Hold the needle so

the

the

needle

needle

clamp

that

comestoyour

screw.

the long groove

left

side.

4. Insert the needle deep into the needle hole

5.

Then

THE

During

securely tighten

screw.

SEWING

the running of the machine, if thread

HOOK

the

needle clamping

hards get into the hook or the position of the

hook changes for some reason or to exchange

the

hook

order:

with a new one, do as follows in

1. Rotate the hand wheel and bring the needle

bar to the highest position.

2. Remove

the

bobbin

case

and

the

3. Remove the bobbin case positioning finger

set

screw

and

take

out

the

bobbin

positioning finger.

4. Loosen the 3 screws of the sewing hook.

of

needle

case

Rotate the hand

wheel

and raise up the

feed base to its highest position.

Rotate the

and

the

figure.

place

sewing

it in

hook with your hand

the

positionasshown

in

Pull the hook to your left and take it out.

To install the hook back, reverse this pro

cedure.

-

11

-

RELATION BETWEEN THE HOOK AND THE NEEDLE

Match the needle with the sewing hook as

follows:

1. Rotate the hand wheel and bring the needle

bar

to its

lowest

position.

2. Loosen the needle bar clamping set screw.

Clamp

screw

0T1

(Determine the height of

® DETERMINE

OF

THE

(2)

DETERMINE

OF

THE

Needle

Blade

point of

the

sewing

hook

THE

NEEDLE

Upper

'Lower

Needle

THE

POSITION

SEWING

yA

ILower indicating line

(At

this

the blade point of the

Q'sewing hook

with

the

of

HEIGHT

BAR

Needle

bar

lower

bushing

indicating

indicating line

bar

HOOK

position, match

center

the

needle

Sewing hook

line

3, Match the upper carved lineofthe needle

bar with the lower edgeofthe needle bar

lower bushing.

4. Tighten the needle bar clampingset screw.

(Determine

hook)

the

position

5. Loosen the 3 clamping screws of the hook

so that the hook can be rotated freely with

the

hand.

6. Placethe hook with your hand to the thread

passing position.

7. Rotate the hand wheel and match the lower

carved lineofthe needle bar

edge

of the

needle

barlower

8. In this

the

condition,

hook

with the center lineofthe needle

match

9. Make the clearance between the needle

and the hook blade point to 0.05 mm and

10.

Securely

screw.

tighten

the hook

the

of the

bushing.

the

with

blade

needle bar)

sewing

the lower

point of

clamping

set

12-

ADJUSTING

THE

Presser

HEIGHT

bar

clamp

screw

OF

THE

PRESSER

BAR

When the height or the direction of the

presser bar is to be changed due to

exchangeofpresser foot:

1. Remove the rubber plug of the face plate

2. From this hole, adjust by loosening the

presser bar clamping screw.

3. After the adjustment, securely tighten the

set

screw.

the

ADJUSTING

More

Thread

THE

guide

AMOUNT

OF

THREAD

The

amount

TAKE-UP

of

the

thread

be changed according to the lengthofstitches
or thickness

ideal

thread

of

the

tension.

sewing

1. When sewing heavy weight materials,

the

thread

guide to

your

The thread take-up amount of the take-up

gets

more.

2. When sewing light weight materials, move

the

thread

The thread take-up

guidetoyour

amount

take-up

should

clothtoproduce

move

left

right.

gets less.

-

13

-

Stretch

Gather

feed dog(reverse

stitch

feed dog(reverse

toothed)

toothed)

Howtouse attachments (separate order)

(These

attachments

sory

partsofthe

separately)

Howtouse

lever

the

differential

are

not

machine.

includedasacces

Please

feed

When straight sewing or gather sewing is to be

performed by alternately changing the sewing

types, use the differential feed regulator lever

(D.

For example, when sewing by the differential

feed

ratioof1:1~

foUowing

1.

2. Match

Loosen

set

screw®.

order:

the

feed regulatorbase® to
andset with

3. Make

the

1:2,

make

adjustmentinthe

the

differential

feed

indicating lineofthe differential

"2"

nut®.

tipofthe

differential

inglever® to support the differential feed

regulator

Raise up

4.

® by the

the

Connect

5.

® with the

6.

When

starts,

®

ratio becomes

performed.

7. If

straight

regulator lever is used

and

«Howtouse

When

clothisgather-stitchedbythe

differential

This

by 2 set screws. Be sure to use exclusive

presser foot for this purpose.

*Supplementary

For

For gather stitching B-1613-432-B00

-

14

-

base.

the

differential feed adjusting lever

regulating

screw

® and

nut®

the

differential feed

pedal

with

chain.

pedalissteppedonand

the

differential feed

will

beraisedup andthe differential feed

1:2

and

the

pedal is released,

sewing.

Thus,

gather

sewing, alternately.

attachment

this

attachmentisused,

ratio.

attachment

stretch stitching B-1613-432-AGO

Stretch feed dog (reverse

Gather stitchfeed dog (reverse

canbeinstalled

Feed

Dogs (Reverse Toothed)

regulator

gather sewing can be

the

machine

the

differential feed

for

straight sewing

for

gather

only

amountofthe

order

them

regulating

regulator

of graduation

feed

adjust

tighten

adjusting

the

sewing

will do

sewing

the

very

toothed)

toothed)

lever

lower

easily

base

base

TOKn

Head Office & Plant, 2 1,

Business

Cable Address;

JUKI

Office:

23,

JUKI

Kabuki-cfio,

TOKYO

INDUSTRIAl

8-chome,

Kokuryo-cho, Chofu-shi, Tokyo,

Shinjuku

ku, Tokyo,

Telex: 232-2301 JUKlSINJUku

C0..1TD.

Japan

432

BEB

PrintedinJapan(T)

Japan