Singer 591 Manuel utilisateur

SINGER

591

Service

Manual

From the library of: Superior Sewing Machine & Supply LLC

CONTENTS

Page

DESCRIPTION

MACHINE

ADJUSTMENTS

To Set

Needle

Barat CorrectHeight 2

To Set

Check

Spring

Height

2 —3

To Set CheckSpringTension 3

To Set PresserBarat Correct Height 4

To Time the SewingHook and also Set the SewingHook Sidewise in Relation to the Needle 5

Feed

Reverse

Lever

Time

the

Feed

To Set Feed Dogat Correct Height 7

Needle

BarFrame

Driving

Linkage

Adjustments 22 —23

REMOVAL

AND

REPLACEMENT

PRINCIPAL

ASSEMBLIES

To remove

the

Sewing

Hook

To Replace Oil Filter

143042

To Replace

the

Sewing

Hook

To Remove and Replace the Hook Shaft 10

The Oil Pump 11

To Remove and Replace the Upright Arm Shaft 12 —13

To Remove

and

Replace

the

Needle Bar 13

To Remove and Replace the Presser Bar 14

Needle Thread Take-up . . . 14 —16

To Remove and Replace Arm Side Shield Wick, Needle Bar Wick and Needle Bar Connecting

Stud

Wick on

Drop

Feed Machines 16

Remove

Oil Wick

Holder

Install

New

Oil

Wick

Holder

—

The

Arm

Shaft

—21

The BobbinWinder 22

SERVICE

INSTRUCTIONS

FOR

COMPOUND

FEED

SYSTEM

Needle

BarFrame

Driving

Linkage

Adjustments 23

To Remove and Replace Arm Side Shield Wick,NeedleBar Wickand Needle Bar Connecting

Stud

Wick

on Compound Feed

Machines

Remove

and

Replace

Needle

BarFrame

Assembly

and

Needle

Bar 25

Remove

and

Replace

Compound

Feed

Connecting

Rod 25

★

Trademark

THE

SINGER

COMPANY

1981

THE

SINGER

COMPANY

All

Rights

Reserved

Throughout

the

World

From the library of: Superior Sewing Machine & Supply LLC

^9^

SINGER

DESCRIPTION

Class

591

Machines

are

high

speed,

rotary

hook,

fully

automatic

lubricated

long

arm

flat

bed

lockstitch

machines

with

drop

feed

in'D'

varieties,

compound

feed

in'C

varieties

and

hand

operated

reverse

feeding

mechanism.

Recom

mended

for

general

stitching

operations

ona

range

light

heavyweight

fabrics.

GENERAL

FEATURES

Federal stitch type 301,

Balanced

horizontal axisrotating hook.

Pendantlinkfeedwithfeed

leveling

hinge

pin.

Dialtype stitch regulatoron feed

reverse

lever.

Improvedthread take-upleverguard.

Fully automatic lubricatingsystem.

Adjustable

eccentric

for

matching

the

feed

the

needle

and

feed

dog.

(Compound

feed

machines)

Kneelifter mechanism isintegralwith the machinebaseand oil reservoir.

Arm

top

cover with oil flow indicator and bobbin winder.

The

armis

provided

with

aseatfor

mounting

light

fixture.

SPECIFICATIONS

Needle

bar

stroke:

Oearance under presser foot:

(Maximum lift

presserfoot whenraisedwith

knee lifter —12.7mm)

Maximum stitch length:

Maximum speed:

Oil:

Bed

size:

30.5mm

591D200A,

591C200A

36.5mm -591D300A, 591D308A, 591C300A

7.2mm

-591D200A,

591C200A

7.9mm

-591D3G0A,591D308A, 591C300A

6S.P.I. -

591D200A,

591C200A

SJ.I.

-591D300A, 591C300A

3.2 SP.I. (Reverse4 SP.I.) - 591D308A

5,500

SPA1.-591D200A

5,000

SP.M.

-591D300A, 591C200A

4,500

S.PJd.

591C300A

3,000

SP.M.

591D308A

SINGER* Type

"C"

476mm

178mm

-1

From the library of: Superior Sewing Machine & Supply LLC

SET

NEEDLE

BAR

CORRECT

HEIGHT

PREPARATION:

Removeface plate, slide plate and throat

plate. See that needle is correctly set in

needle

bar.

On drop feed varieties, lower end

bushing A, Fig. 2, must be set as shown in

Fig, 2. To reset bushing, loosen screw B.

On compound feed varieties, this dimen

sion is automatically obtained when needle

bar

frame

assembled.

CHECK:

When needle bar is at its lowest point

(during rotation

machine pulley), UPPER

TIMING

MARK

needle

bar

should

level

with

lower

end

bushing.

Check timing

hook as instructed on

page 5.

Fig. 2

TIMING

MARK

58.73mm

591D200A,

591C200A

66.01mm

591D300A,

591C300A

THROAT

PLATE

SEAT

SETTING:

Loosen

clamping

screw

Fig.

Raise

lower

needle

bar

that

UPPER

TIMING

MARK

level

with

lower

end of

bushing.

Then

securely

tighten

screw

Replace

throat plateand slideplate.

When

replacing

the

face

plate,

make

certain

that

the

screw

holes

the

face

plate

gasket

are

aligned

with

the

spective

screw

holes

the

face

plate;

avoiding

injury

the

gasket

and

consequent

oil

leakage.

SET

CHECK

SPRING

HEIGHT

PREPARATION:

Threadthe

machine

and

place

lightweight

material

under

presser

foot.

CHECK:

Turn

machine

pulley

over

toward

operator

slowly.

When

take-up

lever

begins

rise,

check

spring

Fig.

makes

slight

dip

and

return

its

higher

position.

Later,

take-up

lever

approaches

top

stroke,

check

spring

Dshouldbe

drawn

allthewaydown;settingthe stitch.As

lever

descends,

checkspringD returnsto rest.

-2

From the library of: Superior Sewing Machine & Supply LLC

SETTING:

Loosen screw E, Fig.3. Turn stud F, Fig.3 (at the

same time turning entire tension assembly) either

over toward left

lower check spring and decrease

its movement,

over toward right

raise check

springand increaseits movement. Securelytighten set

screw

NOTE: Under certain conditions of tacking, it

may be necessary to set the check springhigherthan

it is otherwise normally set.

CAUTIGN:

Check spring height setting must be

checked each time a different foot is applied to

machine.

SET

CHECK

SPRING

TENSION

PREPARATION:

Thread the machine. Securely tighten set screw E,

Fig. 4. Make certain thumb

nut

is on stud F, Fig. 4.

CHECK:

Tension on check spring D. Fig. 4, should be suf

ficient to ensure action at top speed;

but

still light

enough to permit itself to be drawn all the way down

(as take-up lever approaches height of stroke) before

any thread is drawn through

the

tension discs.

SETTING:

Using a large screwdriver in slot

stud F, turn

stud

either

over

toward

left

decrease

tension

over to right

increase

it,

as shown.

tension

LESS

TENSION

GHER

LOOSEN

LOWER

Fig. 3

TIGHTEN

Fig. 4

NOTE: The tension on the check spring may require different settings depending upon the size

thread used.

Heavier thread requires more tension to ensure correct thread control.

-3

From the library of: Superior Sewing Machine & Supply LLC

SET

PRESSER

BAR

CORRECT

HEIGHT

CLEARANCE

FOOT

RESTING

FIRMLY

UPON

THROAT

PLATE

HIGHEST

POINT

<S)

LOWEST

POINT

JUST

✓

CLEAR

PREPARATION:

Remove face plate and slide plate.

CHECK:

1. When presser foot rests firmly upon throat plate (with feed dog below throat plate) there should still be

some clearance between guide bracket G, Fig. 5 and lifting lever link H, as shown in Fig, 5.

2. When presser foot is at its highest point and needle bar is at its lowest,

top

presser foot should clear

lower end

needle bar, as shown in Fig. 6.

SETTING:

LoosenclampingscrewJ, Fig. 5. Raiseor lower guide bracket G, as required. Securely tighten screwJ.

CAUTION:

Whenever

guidebracket has been moved on presserbar, inspect the check spring for correct set

ting, as instructed on pages 2

and

From the library of: Superior Sewing Machine & Supply LLC

TIME

THE

SEWING

HOOK

AND

ALSO

SET

THE

SEWING

HOOK

SIDEWISE

RELATION

THE

NEEDLE

PREPARATION:

Remove presser foot, slide plate, throat plate and

feed dog.

On compound feed varieties, set stitch length

zero (setting feed to zero is not required on drop

feed machine).

CHECK:

When lower timing mark on needle bar is level

with lower end

lower needle bar bushing A as

shown in Fig. 7, the point

the sewing

hook

should

be at

the

center

the

needle, as shown in Fig. 7.

Also, when point

sewing hook passes needle,

clearance between

hook

point K, Fig. 8 and needle

should be approximately equal to thickness

piece

ordinary notepaper (about .13mm), as shown

in Fig. 9.

NOTE: Not only point

sewing hook

but

entire

"FLAT"

hook

point

should clear scarf on needle

blade. Normally, a .5mm clearance is provided be

tween hub

hook

and oil retaining collar.

SETTING:

Loosen two set screws L, Fig. 7 in

hub

hook.

Then retighten one

the set screws very lightly so

that the sewinghook can still be turned on the shaft.

Hold shaft immovable and turn

hook

as required

to bring point

hook to center of needle as shown

in Fig. 7 and at the same time adjust clearance be

tween needle and

hook

point as shown in Fig. 9.

Tighten set screws L lightly, turn machine pulley

make certain the sewing

hook

is correctly set in

relation

the

needle.

Then

securely tighten set

screws

LOWER

TIMING

MARK

HOOK

POINT

CENTER

NEEDLE

Fig. 9

UPWARD

STROKE

Fig. 7

HOOK

POINT

Fig. 8

NOTEPAPER

FLAT

HOOK

POINT

From the library of: Superior Sewing Machine & Supply LLC

FEED

REVERSE

LEVER

Before the machine leaves the factory, the spring tension

the feed reverse lever is set at an appropriate tension for easy and

comfortable sewing operation.

If it is necessary to adjust the feed reverselever spring tension,

tip machine back and loosen feed reverse lever spring retainer

screw Y3 holding the spring retainer Z3 on the machine leg.

Move

spring retainer Z3 up or down, as required, and firmly

tighten screw

Y3.

The lighter the tension, the easier it is to operate the feed

reverse lever, however

the

tension should be

set

alittle heavier for

maximum stitchlength and high speed sewing.

Normally, the 591D200A/C200A machines are adjusted to

sew a maximumstitch length

4.2mm (6 s.pi.)and 591D300A/

C300A machines to sew 5.1mm (5

s.pi.).

This however, can be

changed to 5.1 mm

desired, by turning over the feed regulat

ing dial stopper C4 on the underside

the feed reverselever, as

shown in Fig. 10.

Fig.

NOTE: The 591C200A machine can

not

sew a maximum stitch length

4.2mm when fitted with standard

fittings.

CAUTION:

Makesure the feed dogclearsthe front and rear edgesof the throat plate slots whenmaximumstitch

length is changed to 5.1mm.

TIME

THE

FEED

Before

the

machine leaves the factory,

the

feed

and

feed

lifting eccentric is set for average sewing conditions; having

the timing screw (screw Mwhich appears immediately after set

screw N, Fig. 11, when feed eccentric is rotated toward the

operator) align on the timing mark provided for it on the arm

shaft. (Timing line on shaft for drop feed is at

top

when

needle bar is in

DOWN

position, whereas timing mark for

compound feed is at top when needle bar is in Up position.)

The timing screw M, Fig. 11, on the feed and feed lifting

eccentric should be securely tightened after it has been aligned

on the timing mark on the arm shaft. The set screw N, should

also be securely tightened.

-6-

Fig. 11

From the library of: Superior Sewing Machine & Supply LLC

If for any reason, it is necessary to alter the timing of feed and feed lifting eccentric, the eccentric should be

adjusted and locked in desired setting with the timing screw Mand the set screw N.

NOTE: Whenever the timing

the feed is changed, sewing hook should be checked for necessary adjustment

also as instructed on page 5.

SET

FEED

DOG

CORRECT

HEIGHT

FULL DEPTH OF TEETH

0.8mm

-591D200A, 591C200A THROAT PLATE

1.0mm

591D300A, 591D308A,

591C300A

Fig. 12

When the feed dog is at its highest position, approximately the

full depth of allthe teeth should project abovethe top surfaceof the

throat plate, as shown in Fig. 12.

Before checking the height

the feed dog, set the machine for

the longest stitch.

To adjust, loosen the clampingscrew P, Fig. 13 and raise or lower

the feed dog (which is fastened to the feed bar Q, Fig. 13) as re

quired. Then securely tighten screw P.

The feed dog should be level at the top

its feed path.

not,

tip machine back and

loosen feed bar hinge pin clamping screw A4

just enough to

tum

feed bar hinge pin (ec

centric) B4, Fig. 13. Insert screwdriver into

access hole in end

bed and

tum

hinge pin B4

as required to level the feed dog. Securely

tighten clamping screw A4. Check feed dog

height.

If it is found necessary to adjust the feed

dog height due to the material being sewn

and/or exchanging the feed dog and throat

plate, it should be adjusted in the manner ex

plained above.

LOWER

HIGHER

Fig.

NOTE: Feed dog should

not

contact edges

the throat plate slots during its movement

but

should be located

centrally in relation

the front, rear and sides

throat plate slots.

-7-

From the library of: Superior Sewing Machine & Supply LLC

INSTRUCTIONS

FOR

REMOVAL

AND

REPLACEMENT

PRINCIPAL

ASSEMBLIES

CAUTION

MECHANICS

Machines

Class

591 are made with extreme precisionin machiningand assembly,and the "Superfinish" process

provides

microscopically

smooth

bearing

surfaces.

Therefore,

special

careshouldbe taken not to permitany mis

alignment of parts or to

cause

any scratches or nickson the

bearing

surfaces

careless

assembly

or handling of

parts. Anysuch

damage

mightrenderthe machine incapable of the long,trouble-free

service

for whichit is

designed.

REMOVE

THE

SEWING

HOOK

NO.

143042

Fig.

Remove the needle, slide plate, throat plate and bobbin case. Remove the screw R, Fig. 14 and the bobbin case

holder positionbracket S, Fig.14.

Loosen

the twoset

screws

L, Fig.14in the hub of the hook and turn the

machine

pulley over toward the operator until the feed bar Q is raised to its highest point.

Turn the sewing hook until the thread guard U, is at the bottom, as shown in Fig. 15. Turn the bobbin case

holder V, Fig. 15 until the notch Wisalsonear the bottom, asshownin

Figs.

15 and 16. The

sewing

hook can then

removed

from

the

hook

shaft.

-8

From the library of: Superior Sewing Machine & Supply LLC

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