(3) Adjusting the front and rear base-lines (Fig. 47)
1)
Make
sure that the
needle
passes
the feed plate and work clamp foot
evenly
without touching them at any
point.
0.1-0.2%
Feed
bracket
clamp
screw
Feed
plate
clamp
screw
Fig.
47
2)
Positions
of the
feed
plateandthe work
clamp
foot canbe
adjusted
according
to the front andrear
base-lines
of
the bar tack by
loosening
the
clamp
screws
of the feed plateand the feedbracket.Takecarenot to
damage
the
aluminium feed plate when looseningor tightening the clampscrew.
(Note)
Provide
a 0.1 to 0.2 mm
clearance
between
the top end of
ball
retainer
(D
andthe bottom
surface
of
the machine arm when springs
Cu
are removed.
If there is no clearance, action
of
the
work clamp foot will be hindered.
(5)
Adjustment
of
the
shuttle
race
1) To adjust the shuttle race position in its axial
direction, loosen
the
clamp screw and
then
turn
the shuttle race adjusting shaft which is
located on
the
right side face
of
the
machine
bed as shown in Fig.
48.
2) To take
out
the
shuttle race, the shuttle race
adjusting shaft must be removed from the
bed.
It
is
advisable
to
insert
the
shaft
setscrew
into the shaft and remove them together.
Before taking
out
the shuttle race, remove the
oil felt presser plate which is connected to the
oil
wick
on
the
bottom
of
the
machine
bed.
3)
In order to prevent the shuttle from seizing
due to overheating, use a special shuttle for
LK-980 Series models and apply a
drop
of
lubricating oil to the raceway
of
the
shuttle
race and
about
1/10
of
oil in
the
attached
oiler
to
the
oil
tank
felt
installed
in
the
machine
base.
-
32
-
Clamp
screw
^7
Shuttle
race
adjusting
shaft
Shaft
setscrew
Fig.
48
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