Pfaff 3337 Service Manual

PFAFF

.STOCK

DESC.

"

UNIT

ii^^JouANTITY

GUST

NO

jSysT.

OF^

SeryjceJMaiuiaJ

MAHUai.:

1 , j

*J

3337

date

PICKED

ORDER

PFAFF

INDUSTRIEMASCHINEN

GMBH

KAISERSLAUTERN

Service

and

Illustrated

Manual

Guide

for

the

for

Tape-Recorded

Pfaff

3337

Instructions

Tools, gauges and sundry materials required for adjusting the Pfaff 3337:

1

setofscrewdrivers

1

setofspanners

1

set

of hexagon socket

1

Seeger

1

hammer

1

brass

circlip pliers

punch

with

openings

screw

blades

from

2—10

mm

wide

from

7-14

mm wide

keys ranging from 1.5 to 6 mm

1

metal

1

universal

1

needle

1

C-clamp,

1

wrapper

1

stripofwhite

sewing

ruie,

0.3 mm

gauge.

rise

gauge,

No.

880137/00

with

System34needles

paper,

thread

thick

No. 91-129604-91

2.4 mm,

Order

and

No.

880136/00

0.

Preparations

0.1.

Press

0.2. Remove

0.3.

Disconnect

0.4.

Unscrew

0.5.

Take

1.

Removing Take

1.1.

1.2.

Loosen

fulcrum

1.3. Pull

the

blocks,

for

adjustment

the

two

push

the

V-belt from its puiiey.

both

chains.

both

ciamp

the

needle

outofthe

the

forked

the

circlip

pliers

screw

2 of

stud

out.

V-beit pulley,

off

the

arm

buttonsonthe

feet.

needle

clutdi

lever

and

remove

the

fulcrum

together

shaft.

belt

guard

bar.

(Fig.

1)

circiip1from

studinthe

with

the

and

forked

the

forked

strip

arm

clutch

the

clutch

lever

iatter.

shaft.

lever,

and

the

push

two

the

slide

Fig.

0

w

1

2.

Adjusting

2.1.

Make arm

disc

2.2.

Turn

to

2.3.

Reposition the

2.4. Hold

2.5.

Replace

and

sure

shaft

and

screw

release

annular

the

secure

the

drive

the

stop

can

no

remove

4 In

the

cotter

the

drive

grooveonthe

drive

pulley in

the

clutch

it In

pulleyonthe

lug

has

snapped

longerbeturned.

the

latter.

the

drive

pulley

underneath.

pulleyonthe

shaft

this

position

disconthe

position

with

arm

out

(see

drive

screws

shaft

(Figs.2and

Into

the

Take

the

a few

turns

arm

shaftsothat

encircled

and

tighten

pulleysothat

3 Fig. 2).

2a)

notchofthe

three

screws3outofthe

(Fig. 2a),

view

its

in Fig.

then

face

2a).

screw4securely.

the

marksonboth

drive

pulley

hit it on

sideisflush

are

and

the

in line,

the

clutch

head

with

o

Qb

©

3.

3.1.

3.2.

3.3.

3.4.

3.5.

3.6.

Adjusting

Unscrew

Through

the Turn

Depress is

latch,

starting

eccentric

arrested

if it is

the

latch.

the

by

segmentofthe

turns,

then

operate

Turn

eccentric

iatch

and

locking

in

this

position,

starting

cover

whichislocated

large

access

stud

6 until

starting

leverbyhandasfarasit will gosothat

the

locking lever, i.e.

not

because

feed

cam,

the

stud

6 until

lever

securely

iatch

starting

(see

tighten

(Fig. 3)

window,

the

starting

the

turn

the

there

encircled

on

ioosen

tripping

V-belt

lever

is a

both

the

sideofthe

both

iatchisat

the

iatterispositionedinthe

ieverispositioned

screws

its ieft

arm.

5 in

pointofreversai.

pulleyinsewing

again.

clearance

viewinFig.

screws

of 1 mm (0.04")

3).

5 in

the

bearing

the

bearing

the

starting

notchofthe

on

the

stop

directionatleast

between

plate.

piate

latch

tripping

three

starting

of

O

Fig. 3

4. Vertical Through

4.1.

4.2.

Depress

by

4.3.

Push cutoutinthe

(see

4.4.

Push

adjustmentofstarting

the

access

the

starting leverasfarasIt will gosothat

the

locking lever.

the

starting

starting latch. In this position,

encircled

the

view

starting latch

disc in sewing direction until the

window,

latch

in Fig. 4).

upwards

down

latcfi (Fig. 4)

loosen

screw

until

the

until it

clears

stop

7 at

locking lever

tighten

the

lug

snaps

the

right

endofthe

the

contacts

screw

locking lever.

starting

7 of

latch is locked

the

Then

turn

starting

bottom of

starting latch

the

latch.

clutch

into the notch of the drive pulley.

the

O

Fig.

4

5.

Adjusting

5.1.

Loosen

5.2.

Push

5.3.

clutch

Replace

5.4.

Checktomake

5.5.

so

5.6.

While lightly pushing against the V-belt pulley, turn

clearance

on

In

5.7.

5.8.

Operate the starting lever to

ing

5.9.

Turn

the

lever,

that

the

this

lever.

screw

the

forked clutch lever (Fig. 5)

the

jam

nutsonscrews8and9and

V-belt pulley,

fulcrum

and

clrcllp 1 in

sure

the

arm

shaft

stud

securely

the

cannot

together

through

of 2 mm (0.08")

arm

shaft

(see

upper

position,

tighten

9 in until

the

with

the

tighten

screw2on

grooveofthe stop

lug is still

be

turned.

between

encircled

jam

nutonscrew

cause

clearance

turn

both

the

forked clutch lever,

holesInthe

the

screws

angular

forked

brad<et

clutch

out

onto

lever.

arm shaft.

positionedinthe

the

collarofthe

notch of

screw

8 in until

V-belt pulley

view in Fig. 5).

8.

the starting latch to be retained by the lock

between

the

leaf

spring

and

underneath is 1 mm (0.04"), as illustrated in the lower encircled view in Fig. 5.

In this position, tighten

5.10.

Please adjusted

note:

with

Screw

the

8 is

clutch

the

adjusted

engaged.

/

jam nut on

with

screw

the

9.

clutch

disengaged,

while

a few

the

arm shaft.

and

the

drive pulley

there

and

the

screw

turns.

forked

Is a

clrcllp

bracket

9 is

6. Adjusting the clamp lifting lever (Fig. 6)

6.1.

Through

joint.

6.2. Loosen the jam nut of screw 10 on the clamp

a

6.3.

Turn

the access

few

turns.

the screw in again

window,

until

disconnect the

knife

lifting

there is a clearance of

actuating rod at its upper

lever, and turn the screw out

122mm(4.8")

thrust plateInthe machine arm and the cylinder bed top cover (see encircled

view in Fig. 6).

6.4.

In

this

position,

6.5. Connect the knife actuating rod again.

tighten

the

jam

nut of screw 10 on the

clamp

lifting

o

between

lever.

ball

the

Fig.

6

7.

Adjusting Through

7.1.

Note:

7.2. Turn the

circled

7.3. In

the

knife

actuating

the

access

window,

The

top nut

connecting

slot of

view

this

position, tighten both lock

has

rod 11 until

the

knife

of Fig. 7).

left-hand

actuating

rod

(Fig. 7)

loosen

both

thread.

the

guide

segment

nutsofconnecting

lock

nutsofconnecting

studispositionedatthe

without exerting

any

rod 11.

lowest point in

pressure

(see

en

O

Fig.

0)

7

8.

Adjusting the locking lever (Fig. 8)

8.1.

Through

sufficiently to allow the latter to be moved against resistance.

8.2.

Adjust the locking lever so that it clears the locking latch at a distance of 1 mm

(0.04")

8.3.

Operate the starting lever, then adjust the locking lever vertically so that there

Is a clearance of

lower

8.4.

In this position, tighten both screws 12 of the locking lever.

the access

when

encircled

the

clamp

0.1

view).

window,

lifting

mm

(0.004")

loosen

lever

both

screws 12 of the

Is operated (see upper encircled

between

locking

lever und

locking

lever

just

view).

latch (see

o

Q

m

Fig.

8

9.

Adjusting

(on

9.1.

Loosen

clamp

9.2. Adjust

at

9.3. In

lever.

9.4.

Loosen

the

machines

both

lifting

the

rest.

this

position,

both

starting

the

micro

equipped

screws

lever.

switchsothatithas

tighten

screws

lever.

9.5. Adjust the switch so

9.6. In

this

position, tighten

switches

with

13 of

both

14 of

the

thatithas

both

(Fig. 9)

electromagnetic

the

starting

just

been

screws

clamp

just

13 of

lifter

been

14 of

or

pneumatic

mechanism

closed

the

mechanism

closed

the

switch

inhibitor

when

the

switch

above

inhibitor

when starting lever is at rest.

above

the

starting

switch

clamp

lifting lever is

the

switch

starting lever.

mechanism)

above

clamp

lifting

above

the

Fig.

Q

6)

w

9

10. Centering the needle in the needle hole (Fig. 10)

10.1. Remove

10.2.

Operate the starting lever, then rotate the balance wheel and adjust the position

the

face

cover, then

loosen

both

screws

15 of

the

needle

of the needle bar frame until the needle Is centered in the needle hole exactly.

10.3.Inthis position,

bindingofthe

evenly

needle

tighten both screws 15 of the needle bar frame to prevent

bar.

bar

frame.

Fig. 10

10

11. Dismantling

11.1. Bring

11.2.

11.3.

11.4.

11.5.

11.6.

11.7.

Take the

cover

Loosen

pull

the

Loosen arrow)

Remove

Remove of

the

Take

the

out

screw

shaft

screw

and

arch

the

spacing

out

certain

needle

both

strip.

pull

slide

the

screws

17

out.

18 of

the

clamp,

washers

four

parts

bar

on

shaft

feed

block

screws

to Its

16 of

the

from

which

prior to

highest

the

lower

upper

out.

bar

and

the

are

19 of

the

point.

cover

transverse

feed

front

possibly

the

needle

following

strip

above

plate.

stud,

placedonit.

plate

adjustments

motion

taking

and

the

front

shaftInthe

shaftinthe

care

remove

(Fig. 11]

slide

that

block

and

arch

youdonot

the

latter.

clamp

lose

remove

and

(see

any

Fig.

U

17

19

11

Pfaff 3337 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual