Singer 251-2 - Removing the Needle Thread Take-up

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
34
TO
REMOVE
THE
NEEDLE
THREAD
TAKE-UP
,B3
t
i
~
~T~&?
Fig. 52. Removing Needle
Thre<1d
Take-up
Remove needle thread take-up
in
the
following
man-
ner:-
1.
Remove
face
plate
and
arm
hole
plug
A3, Fig.
53
from
machine.
2.
Remove
needle
bar,
upper
needle
bar
bushing,
presser
bar
pressure
regulating
thumb
screw
X2,
Fig.
51,
page
33,
and
guide
bracket
T,
Fig.
52
as
instructed
on
page
35.
3.
Turn
machine
pulley
as
required
to
reach
screw
Y2,
Fig.
53,
in
needle
bar
crank
through
hole
left
by
removal
of
plug
A3.
Loosen
set
screw
Y2.
4.
Using
wrench
146057
(through
some
hole)
and
turning
machine
pulley
as
required,
loosen
the
large
hexagon
head
clamping
screw
Z2, Fig.
53,
on
needle
bar
crank.
CAUTION:
DO
NOT
DISTURB
the smaller
hexagon
head
position
screw
U2, Fig. 53,
which
holds
the
needle
bar
crank
at
its
correct
position
on
the
horizontal
arm
shaft.
5.
Loosen
small
set
screw
B3, Fig.
52
in
the
rear
of
the
arm
of
the
machine.
DO
NOT
.
DISTURB-- F3
22
Y2
• . I
• :
;:;-
-
~<r":);'..,,'
' -
I
~
·,
.
.
.
DO
NOT
DISTURB·-··U2
Fig.
53.
Needle
Bar
Crank
E224l3
6.
Insert
a
face
plate
screw
E3, Fig.
52
in
the
topped
hole
in
center
of
stud
C3, Fig.
52
and,
while
hold-
ing
back
the
needle
thread
toke-up
link
inside
the
head
at
G3,
Fig.
52,
pull
upon
the
screw
E3
until
the
stud
C3
is
removed.
Remove
face
plate
screw
from
stud.
NOTE: Extractor Tool Serial
222226
may
be
used
in-
stead of
face
plate screw
at
E3, Fig.
52,
to
pull hinge
stud C3.
7.
Back
the
end
of
the
toke-up
H3,
Fig.
52
toword
the
inside
of
the
machine,
turning
the
machine
pulley
as
required
until
the
take-up
is
free
of
the
slot
provided
for
it.
8.
The
needle
thread
toke-up
link
assembly
(includ-
ing
ports
F3,
G3,
H3, J3, Z3
and
W4)
con
now
be
pulled
free
of
the
needle
bar
crank
WITHOUT
DISTURBING
THE
NEEDLE
BEARINGS WITHIN
THE
THREAD
TAKE-UP CRANK AT F3, Fig. 53.
NOTE:
If
the
needle
bearings
at
F3, Fig.
53,
are
acci-
dentally
disturbed,
they
must
be
reassembled
so
that
there are exactly 18
bearings
in
each of the two as-
semblies.