to
place
a piece
of
thin
paper
between
the finger
and
the
projection
on
the bobbin case. When the finger begins to hold the
paper
in position, it
has
reached
the
position
where
it will begin to
rotate
the
bobbin
case.
When timing the mechanical opener,
care
should be taken
that
the
upper
and
lower
jaws
of
the link will not be
moved
sideways
on the
shaft,
and
further,
that
the mechanical opener shaft will not be allowed any end play.
If existent, it should be corrected by adjusting either the
opener
link
jaw
or the
set
collar, (Photo 14).
30.
Disassembling
ihe
Link
Take-Up
1. Remove
face
cover,
presser
foot
and
needle.
2.
Take
out
the
pressure
regulating
screw
and
the
presser
bar
spring,
slacken
set
screw
B (Photo 30) in
presser
bar
lifting
bracket
and
pull
the
presser
bar
out
of
the machine.
3. Loosen
set
screw
C (Photo 30) in
needle
bar
connecting
stud
and
set
screw
D (Photo 20) in the needle
bor
upper
bushing,
remove
oil wick
clip
and
oil wick
and
pull the needle
bar
out of its bearings.
Photo
28
33
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