Singer 29K71 Troubleshooting guide

From the library of: Superior Sewing Machine & Supply LLC

1

USE

SI

GER

**

OILS

and

LUBRI

CAN

TS

They

insure

freedom

from

lubricating

trouble

and give

longer

life

to

sewing equipment

The

following are

the

correct lubricants lor this machine:

TYPE

B -MANUFACTURING MACHINE

OIL,

HEAVY GRADE

When

an

oil

is

desired which will produce a minimum

of

stain on fabrics,

even

alter a long period

of

storage, use:

TYPE

D -MANUFACTURING MACHINE

OIL,

HEAVY GRADE

OTI-I£:R

5 I N

Ci

ER

**

L

UBR

I

CANTS

TYPE

E -

THREAD

LUBRICANT

For lubricating the needle thread

of

sewi

ng

machines

for

stitching fabrics

or

leather where a thread lubricant

is

required.

TYPE

F -MOTOR

OIL

For

oil

lubricated motors and plain bearings

in

power

tables and transmitters.

NOTE: All

of

the

above

oils

are

available

in 1

quart,

1 gallon and 5 gallon cans.

GEAR LUBRICANT

This

specially prepared grease

is

recommended

for

gear

lubrication on manufacturing sewing machines.

BALL BEARING LUBRICANT

This

pure grease

is

specially designed

for

the lubrication

of

ball bearings and ball thrust bearings

of

motors and

electric transmitters, ball bearing hangers

of

power

tables,

etc. Furnished in 1

lb.

and

4

lb.

tins.

From the library of: Superior Sewing Machine & Supply LLC

Form 20870

·

--

(957)

SERVICE

MANUAL

AND

PARTS

LIST

FOR

SINGER**

29K71, 29K72

and

29K73

UNIVERSAL

UPPER

FEED

MACHINES

SINCLE NEEDLE LOCK STITCH

THE

SINGER

MANUFACTURING

COMPANY

1958

by

The Singer Manufacturing Company·

**A

Trademark

of

THE

SINGER

MANUFACTURING

COMPANY

Printed in

U.

~

.S.A

"--

.

_

From the library of: Superior Sewing Machine & Supply LLC

FOREWORD

This book contains complete information covering

operation,

adjustment,

and

parts

list, for Machines 29K71, 29K72

and

29K73. Descriptions

and

exploded

views

of

all

parts

assemblies on

pages

17

to

44 inclusive, will

be

found

helpful

when

ordering

any

part

of

the

machine

requiring

renewal.

From the library of: Superior Sewing Machine & Supply LLC

3

DESCRIPTION

Machines

29K71, 29K72

and

29K73, for stitching boots, shoes,

and

other

tubular

work

in

leather

and

fabrics,

have

the

following characteristics:

Single

Needle,

Lock

Stitch.

Stop Motion

Hand

Wheel-

releases

hand

wheel

from stitching

mechanism

for

bobbin

winding.

Horizontal Oscillating Shuttle.

Eccentric

Adjustment

for

Shuttle Timing.

Cylinder

Bed.

Replaceable

Steel Horn.

Universal

Upper

Feed

for

Stitching

in

any

direction

without

turning

the

work.

Stitch Length: 7 to 15 to

the

inch,

depending

on

material

being

stitched

and

operations

performed.

Presser Foot rise

during

feeding

action

: 1I 4 inch -(Maximum

clearance:

318 inch).

Double End

Needle

Plate

-

(two

sizes

of

needle

holes

at

each

end

for

various

sizes

of

needles).

Adjustable

Thread

Take-

up

Lever.

Two

Speed

Machine

Pulley.

ACCESSORIES

AVAILABLE UPON

ORDER

(at

additional

charge)

Attachment

for

fitting

Hand

Wheel

on

front

of

machine

(Part No. 82121

).

. .

{601405

or

601407

for foot

power.

Stand

for

mountmg

the

mach

me

601406

601408

f 1 .

or

ore

ectnc

power.

Detachable

Work Table

for

flat stitching

operations

(Part No.

83739,

83740,

or

83741).

Electric

Transmitter

S-9.

SPECIAL

FEATURES

MACHINE

29K71

End

of

cylinder

bed

is

1 inch

wide

and

7/ 8 inch

deep.

Space

at

right

of

needle

12-1I 4 inches.

Diameters

of

belt

grooves

2-718 inches

and

4-7

/ 8 inches.

MACHINE

29K72

End

of

cylinder

bed

is

1-51

32

inches

wide

and

1-1

I 16 inches

deep.

Space

at

right

of

needle

17-1/ 2 inches.

Diameters

of

belt

grooves

3-1 I 4 inches

and

5-1

/ 2 inches.

Large Bobbin.

MACHINE

29K73

End

of

cylinder

bed

is

1 inch

wide

and

7/ 8 inch

deep.

Space

at

right

of

needle

17-112 inches.

Diameters

of

belt

grooves

3-1 I4 inches

and

5-112 inches.

From the library of: Superior Sewing Machine & Supply LLC

SPEED

The

maximum

speed

recommended

for

these

ma-

chines

is

500

stitches

per

minute,

depending

on

ma-

terial

being

stitched

and

operations

performed.

For thick work,

patching,

mending,

and

stitching

elastics,

put

the

driving belt on

the

larger

pulley

of

the

machine

and

the

smaller

pulley

of

the

stand.

For light work,

put

the

belt

on

smaller

pulley

of

the

machine

and

the

larger

pulley

of

the

stand.

When

in

operation,

the

hand

wheel

must

always

turn

over

toward

the

operator

(counter-clockwise).

NOTE:

If

fitted

on

front

of

machine,

hand

wheel

must

always

turn

over

toward

the right (clockwise).

TO

OIL

MACHINE

I

Fig.

2.

Oiling Front Side

of

Machine

When

machine

is

received from

the

factory,

it

should

be

thoroughly

cleaned

and

a

drop

of

oil should

be

applied

to all

parts

indicated

in

Figs. 2, 3

and

4.

Apply

a

drop

of

oil

to

the

stand

at

the

centers

upon

which

band

wheel

and

treadle

work. Also to both

ends

of

the

pitman

rod connecting

the

treadle

with

band

wheel.

Run

machine

for

a

few

minutes to

work

oil into

bearings.

When

the

machine

is

in

constant

use,

it

should

be

oiled

daily.

\

Fig. 3. Oiling Rear

of

Machine

\

I

Use

"TYPE

B"

or

"TYPE

D"

Oil,

sold

by

Singer Sew-

ing Machine

Company.

See inside front cover

of

this book for description

of

these oils.

Fig. 4. Oiling ShuHie Race

To

oil shuttle race,

raise

needle

bar

to its

highest

point

and

lift

feeding

foot A, Fig. 5

by

moving lifter B

upward.

Press

down

lever

C,

Fig. 5

and

swing

needle

plate

to position

shown

in

Fig. 4.

Apply a

drop

of

oil to

the

face

of

shuttle

race

and

to

the

hole

shown

by

arrow

in

Fig. 4.

_j

From the library of: Superior Sewing Machine & Supply LLC

TO

OPERATE

THE

MACHINE

1. Raise

feeding

foot A, Fig. S by

moving

lifter B

upward.

2. Place

both

feet

upon

the

treadle.

3. Turn

top

of

hand

wheel

over

toward

you to

start

machine.

(If

hand

wheel

is

fitted on front of

machine,

turn

top

of

hand

wheel

from left to

right

to

start

machine.)

4. Allow

the

feet

to

move

freely with

the

motion

of

the

treadle.

Continue this motion with

an

alternating

pressure

of

heel

and

toe until a

regular

easy

movement

is

acquired

and

the

hand

wheel

is

kept

in

continuous

rotation

by

use

of

the

feet

alone.

5.

When

familiar

with the

treadle

movement,

and

you

are

able

to

re-start

the

machine

without

turning the

hand

wheel

in

the

wrong

direction,

place

a piece of

material

under

the

feeding

foot.

6. Lower

feeding

foot

by

lowering

lifter

and

oper-

ate

machine

until you

have

become

accustomed

to

guiding

the

material.

Material

is

moved

along

by

the

feeding

foot only,

and,

the

direction of stitching

can

be

changed

as

de-

sired,

by

turning

wings, Fig.32.

To

make

a

curved

line

of

stitching,

operate

machine

slowly

and,

without

turning

work,

turn

the revolving

wings

enough

to pro-

duce

the

desired

curve.

Feeding foot rises

between

each

stitch

while

needle

is

in

the

material.

With

needle

serving

as

pivot,

ma-

terial

can

be

turned

in

any

direction.

When

desired,

the

feeding

foot

may

be

fixed to

work

in

a

straight

line, in

any

direction,

by

tightening

the

knurled

screw

A, Fig. 22.

Never

turn

the

work

or

alter

the

direction

of

the

feed

while

the

foot

is

pressing

on

the

material,

as

this

may

cause

missed stitches

and

damage

the

surface

of

the

work.

l

c

A....U

j

Fig. 5.

Operating

Machine

5

NEEDLES

Needles

for

MACHINES 29K71, 29K72

and

29K73

are

of

Class

and

Variety

29

x 3

for

cloth

and

29

x 4

for

leather.

Needles

29

x 3

are

made

in

sizes 11,

14,

16, 17, 18, 19, 21, 22, 23,

24

and

25, Needles

29

x 4

are

made

in sizes 9, 11, 14, 16, 18, 19, 21,

22, 23,

24

and

25.

The

above

needles

regularly

have

nickel finish

but

can

be

supplied

with chromium finish if

ordered.

The size

of

the

needle

to

be

used

should

be

deter

-

mined

by

the

size

of

the

thread

which must

pass

freely

through

the

eye

of

the

needle.

Rough

or

uneven

thread,

or

thread

which

passes

with difficulty

through

the

eye

of

the

needle

will

interfere

with

the

successful

use

of

the

machine.

Orders

for

needles

must

specify

the

Quantity

re-

quired,

the

Size

number,

also

the

Class

and

Variety

numbers

separated

by

an

x.

The following

is

an

example

of

an

intelligible

order:

"1

00

No. 16,

29

x 3 Needles",

for

cloth.

"1

00

No. 16,

29

x 4 Needles", for

leather.

The

best

stitching results will

be

obtained

by

using

the

needles

sold

by

Singer

Sewing

Machine

Company.

THREAD

Left twist

thread

should

be

used

in

the

needle.

Either right

or

left twist

thread

can

be

used

for

the

bobbin.

To

determine

the

twist, hold

the

thread

as

shown.

Turn

the

thread

over

toward

you

between

the

thumb

and

forefinger

of

the

right

hand;

if left twist,

the

strands

will

wind

tight

er.

If

right twist,

the

strands

will

unwind

.

Fig. 6. Determining Twist

of

Thread

From the library of: Superior Sewing Machine & Supply LLC

TO

REMOVE

THE

BOBBIN

Raise

needle

bar

to its

highest

point

and

lift

feeding

foot A, Fig. 7

by

moving

lifter

B,

Fig. 5

upward.

Press

down

lever

C,

Fig. 7

ana

swing

needle

plate

around

as

shown.

Turn

hand

wheel

until

point

of

shuttle

is

nearest

operator,

then

lift

out

shuttle

with

thumb

and

fore

-

finger.

Turn shuttle

over

and

bobbin

will

drop

out.

NOTE:

For 29K72

machine,

move

bobbin

retaining

spring

D,

Fig. 7

outward

before

taking

out

the

bobbin.

of'

c

J,

Fie. 7. Takine

out

the

Shuttle

TO

WIND

THE

BOBBIN

Disengage

hand

wheel

from

operating

stitching

mechanism

by

drawing

out

plunger

F,

Fig. 8

and

turning

it slightly

to

left

or

right.

Place spool

of

thread

on

the

spool pin

and

pass

end

of

thread

through

the

center

slot

or

hole

in

the

bobbin.

Then

press

the

bobbin,

with

slot

in

the

side

of

the

bobbin

facing

to

the

left,

as

far

as

it will

go,

on

bobbin

winder

spindle.

loosen

thumb

screw

D,

Fig. 9

on

bobbin

winder

and

push

it

down

until

the

rubber

ring

presses

against

the

rim

of

the

hand

wheel,

then

tighten

screw.

Turn

hand

wheel

over

toward

you

as

when

sewing

and

simultaneously

guide

the

thread

with

the

finger

as

shown

in

Fig.

9.

6

if'F

Fig. 8

NOTE:

If

hand

wheel

and

bobbin

winder

are

fitted

on

front

of

machine,

the

slot in

the

side

of

the

bobbin

must

face

to

the

outside.

The

top

of

hand

wheel

must

then

turn

over

to

the

right

(clockwise)

as

when

sewing

to insure

properly

wound

bobb

ins.

When

bobbin

is

sufficiently full,

remove

it

from

the

spindle.

loosen

thumb

screw

D,

Fig. 9

on

t

he

winder

and

move

screw

upward

in

slot until

the

rubber

ring

is

out

of

contact

with

the

hand

wheel,

then

tighten

thumb

screw.

Fig.

9. Winding the Bobbin

Re-engag

e

the

ha nd

wh

ee

l with

the

s

ti

tching me-

chanism

by

turning

plunger

F,

Fig. 8 slightly

while

si

multaneously

turning

t

he

hand

wheel

slowly until

the

plunger

enters

the

hole

in

the

inner disc.

From the library of: Superior Sewing Machine & Supply LLC

7

TO

THREAD

THE

SHUTTLE

FOR

29K71

AND

29K73

Fig.10

Turn

shuttle

over

wh

ile

holding

bobbin

in

it

end

drew

the

thread

into

the

slot

in

the

edge

of

the

shuttle

end

under

the

end

of

the

tension

spring

. See Fig.

11.

Fig. 12

Hold

the

bobbin

between

the

thumb

end

forefinger

of

right

hond,

the

slot

in

the

edge

of

the

bobbin

being

at

the

bottom.

Allow

two

or

three

inches

of

thread

to

hong

free

.

Hold

the

shuttle

in

the

left

hand

with

the

wide

opening

uppermost.

Let

end

of

thread

pass

through

shuttle

opening,

then

place

bobbin

into shuttle.

See

Fig.

10.

Fig.

11

Poss

the

thread

through

delivery

eye

which

is

in

the

upper

edge

of

the

shuttle

. See Fig.

12.

From the library of: Superior Sewing Machine & Supply LLC

8

TO

THREAD

SHUTTLE

FOR

29K72

Fig. 13

Place

bobbin

into shuttle

and

push back

the

re-

taining

spring

which will hold

the

bobbin

in

the

shuttle.

With

the

right

hand,

draw

the

thread

into

the

slot

in

the

edge

of

the

shuttle

as

far

as

possible. See Fig. 14.

Fig. 15

Hold

the

bobbin

between

thumb

and

forefinger

of

right

hand

with

the

thread

leading

from right

to

left.

Hold

the

shuttle

in

the

left

hand

with

its

open

end

up

and

its

retaining

spring

moved

outward.

See

Fig. 13.

Fig. 14

Then

draw

thread

to

the

left, up,

and

to

the

right

under

the

spring.

See Fig. 15.

Now insert

end

of

thread

up

through

the

small hole

in

the

edge

of

the

shuttle

and

through

the

eye

in

top

of

the

bobbin

position post. See Fig. 16.

Fig. 16

From the library of: Superior Sewing Machine & Supply LLC

Singer 29K71 Troubleshooting guide

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