Highlead GC0518-MC, GC0518-MC-D User Manual
Purchasing
Copy
Dept
HIGH
LEAD
GC0518-MC/GC0518-MC-D
High Speed Needle
And
Bar
Automatic
Feed Lockstitcher With Edge
Thread
Cutter
Trimmer
Instruction Manual
Parts
SHANGHAI
HUIGONG
N0.3
Catalog
SEWING
MACHINE
FACTORY
l.
PRECAUTIONS
2.
MAIN
3
INSTALLING
4.
ADJUSTMENT
5
LUBRICATION
6
CONDITION
7.
LUBRICATION
ADJUSTMENT
8
9.
REGULAR
l
0.
WINDING
ll
REPLACE
12.
THREADING
13.
SET
14
ADJUSTING
15.
16.
17.
18.
19.
20.
CLOTH
21
22.
SPECIFICATIONS
STITCH
UPPER
LOWER
ADJUSTMENT
ADJUSTMENT
INSTALLING
THROAT PLATE
OTHER
BEFORE
THE
BELT..
OF
NEEDLE
..
OF
OIL
LUBRICATION
ADJUSTMENT..
OF
OIL
CLEANING
ADJUSTMENT
NEEDLES
.
LENGTH
THE
THREAD
THREAD
THREAD
CUTTING
REPLACEMENT
TENSION
TENSION
OF
FEED
OF
THREAD
OF
THE
COVER.
KNIFE
STARTING
..............
PUMP
..........
....
AND
..
DOG
NEDDLE
..
PARTS ..
OPERATION
.
BAR
STOP
..
.....
.
.
............
REVERSE
TENSION
..
TRIMMER
.
INCLINATION
PLATE .
CONTENTS
......................
.
...............
POSITION
FEEDING
..
MECHANISM
.........
..
.
.
.
..
.
.........
.
.......
.
.......
.
........
.
.........
.........
.
........
.
......
.
.........
.
.........
.
.......
.
.........
.
..........
.
..
. . .. 7
.........
.
......
.
.........
.
.......
.
.
....
....
2
2
.3
. 3
.4
4
.4
.4
. 5
. 5
5
6
6
6
7
7
8
9
9
9
l 0
-]-
1.
PRECAUTIONS
1)
Safety Precautions:
(
1)
When turning the
and the area around the balance wheel.
(2)
Power must
(3) Power must
the machine, or when replacing.
be
be
BEFORE
power
turned
off
turned
off
STARTING
on, keep your hands and fingers away from the area around/under the needle
when the machine
when tilting the machine head, installing or removing the
is
OPERATION
not in use, or when the operator leaves the
"V"
seat
belt, adjusting
(4) Avoid placing fingers, hairs,
or motor when the machine
(5) Do not insert fingers into the thread take-up cover, under/around the needle, or balance wheel
is
machine
(6)
If
a belt cover, finger guard, eye guard are installed, do
devices.
2)
Precautions before Starting Operation:
(1) 1 f the machine's oil
(2)
If
the machine
( 3) When a new sewing machine is first turned on, verify the rotational direction
the power
wheel)
(4) Verify the voltage and (single or three) phase with those given on the machine nameplate.
in operation.
pan
is
lubricated
on.
(The balance wheel should rotate counter-clockwise when viewed from the balance
bars
etc., near the balance wheel,
is
in operation.
has an oil sump, never operate the machine before filling
by
a drop oiler, never operate the machine before lubricating.
"V"
belt, bobbin winder balance wheel,
not
operate the machine without these safety
it.
of
the balance wheel with
3) Precautions for Operating Conditions:
(
1)
Avoid using the machine
]0\ver)
(2) Avoid using the machine in dusty conditions.
at
abnormally high temperature (
35
OC
or higher) or low temperature ( 5
when
OC
the
or
2. MAIN SPECIFICATIONS
Item
Material
Max. sewing speed
Stitch length
Needle bar stroke
Presser
Needle
Lubrication
Auto
Auto backtracking
Rotating hook
Motor Speed adj. Motor
By hand
By knee
trinnner
GC0518-MC-D
Auto lubrication hook
(Thread trinuning)
Light-Mediw11 heavy
4500 rpm
0-4111111
31.8nun
4nun
lOnm1
DPX1#14
Auto lubricated
0
0
-2-
GC0518-MC
-
-
Auto lubrication hook
370W clutch motor
3. INSTALLING
1)
Use a V-belt for
2)
To
adjust the
by
height
belt sinks about
the center
the speed may not
medium
proper position.
bearings will deteriorate
turning the tension
of
the belt span.
range, or the
belt
15
nm1
be
If
the tension is too high, the motor
THE
sewing
when
needle
more
BELT
machine use, type M
tension,
adjust
depressed
If
the tension
consistent in the low or
may
rapidly.
(Fig.l)
change
the motor
nuts so that the
by
hand at
is
too low,
not
stop in the
4. ADJUSTMENT
BAR
1) Adjusting
machine stops at
deviate larger than 3 mm adjust as follows
2) Adjusting
When the pedal
machine stops
deviate larger than 3
STOP POSITION (Fig. 2, 3)
of"
Up" position
When the pedal is
"UP"
(l)
Disconnect the
fTom
the machine head
(2) Run the
position.
(3)
While holding the
the ''adjusting
remove the tool.
Set the machine stops
(I)
Disconnect the
machine
of
"DOWN" position
is
kicked
as
"DOWN"
111111
OF
kicked
tool''
adjust as follows
position.
plug
(12 pins)
and
balance
in
at
"DOWN"
down
position
plug
(
down
If
stop
the hole
12
pins)
by
wheel insert
by
If
NEEDLE
heel, the
the marks
of
cable
at
"UP"
A,
then
position.
hell. the
the marks
of
cable
B
Adjusting tool
/
_3rd
mark
\ Rotating
I\
direction
.---1 st
mark
2
3
from the machine head.
(2) Run the
position.
(3) While holding the balance wheel insert
the
3) Confirm the stop operation then the plug
machine
"adjusting tool"
and
in
stop
the hole
at
"DOWN"
8,
then remove the tool
(1
2 pins) coming from the machine head into
the receptacle.
-3-
5.
LUBRICATION (Fig.4)
Pour oil up to position A
During operation, check the oil level periodically,
and in cases where the oil level
replenish the oil supply up to position
Use white spindle oil.
6.
CONDITION
While operating the machine, check the
condition
window.
7.
of
oil lubrication through the oil check
LUBRICATION
of
the oil tank.
is
below position B
A.
OF
OIL
LUBRICATION
ADJUSTMENT
(Fig.6)
Adjusting the lubrication
Oil adjusting screw (A) can adjust the
of
lubrication
(
1)
increase oil and
counter-clockwise
(2)
within
tightened. oil amount
(3) Readjustment depends
sewing speed and the like. In practice, oil amount
can
be
place a piece
about
20 seconds. then check the oil splashed on the
paper
the rotating hook as follows:
Tum oil adjusting screw (A) clockwise to
tum
to
decrease oil.
Oil adjusting screw (A) adjusts oil amount
5 turns When oil adjusting screw (A)
is
judged
as follows: remove the throat plate
of
paper on instead,
of
rotating hook.
oil adjusting screw (A)
is
maximum.
on
temperature.
run
the machine for
fully
and
(Fig.S)
Oi
I check
----------~-----~
~~
window
l-Jf
A
6
7
8.
ADJUSTMENT
OF
OIL
PUMP
(Fig. 7)
The standard adjustment
Jdjusting plate keeps the bypass hole fully closed. To
decrease
appropriately
spbshing.
open the bypass hole
is
as follows The
-4-
9.
REGULAR
I) Cleaning feed dog
Remove the throat plate and clear off the dust and lint between feed dog tooth slots.
2)
Cleaning rotating hook
Swing out the machine head and clean
3)
Cleaning oil
Swing out the machine head and clear off the dust and dirt on oil
Feed dog
CLEANING
pump,
screen
(Fig.S)
the
hook. Wipe the bobbin case with soft cloth.
plll11p
screen.
A----,
B---__,
10.
WINDING
I) The wound bobbin thread should be Peat and tight.
nut
(A)
stud
Note: nylon or pol.r:;ter thread should be wound with little tension; otherwise. bobbin (D) might break or
defom1.
2)
(1:5)
of
Fig 9 (b). move the bracket rightward, but
\\Ound
After adequately positioning the bracket. tighten set
screw (B)
3)
thread
adjusted by adjusting screw (E)
latch
ofbobbin winder tension bracket.
vn;.
~~
bobbin winder tension bracket and slide bracket
as
shmvn
Do
not
\Viii
fill
ADJUSTMENT
·1
o vound thread layer does not present a cylindrical shape
in
Fig 9 (c). move the bracket leftward.
overfill the boubin. The optimum length
about
80'%
of
bobbin capacity This
of
(Fig.9)
(C)
if
thread
bobbin winder stop
can
is
of
be
if
not.
adjust the winding tension by turning tension
leftward or rightward. If thread
as
I
~
shown
in
Fig 9 (a). loosen set screw
is
wound
as
E
shown
in
10
11.
REPLACE N EEOLES
Turn the balance wheel
to
(Fig.1 0)
lift needle bar
to
the upper
)J
-s-
a
end
of
1ts
stroke Loosen needle clamp screw (A). While keeping the long groove
insert the needle shank
Note Fig (b):
Fig (c) wrong direction
12.
THREADING
To
thread the needle tlu·ead, raise needle
perform threading as
balance wheel to lower the needle
bobbin thread is drawn
up
to the bottom
insu!llcient insertion.
(Fig.ll)
shown
in
up.
Put the ends
Fig.3.
of
the needle leftw·ard fully
of
the needle socket. Then tighten needle clamp
of
long groove
bar
to the upper end
To
draw the bobbin thread, hold the end
bar
and then to lift it to its highest position. Pull the needle thread and the
of
needle thread and bobbin thread front\vard under presser foot.
of
its stroke, lead the thread from spool and
scre'v\
(A)
of
the needle thread and turn the
'"~
12
-~~-----·~Reverse
Stitch
adj
13.
SET STITCH LENGTH AND REVERSE FEEDING (Fig.12)
len~,~~-
ust
i ng
Ji~l
lever
/I
I)
To
change the stitch length, rotate the stitch length adjusting dial while pressing the push lever.
2)
Press
1ng
the reYcrse lc\
3)
The button switch can be pressed to perl'orm reverse stitching.
4)
Normally, set the button switch as illustrated
S\Yitch
14.
AD.JUSTING THE
0
Wei I balanced
st1tch
cr
to rc\ crsc stitching.
THREAD
X
The
upper
tight
thread
or
is
too I oose
too
thread
TENSION
is
lower
The upper
too
thread
by
the solid lines. To reverse stitching, press the button
(Fig.l3)
13
is
loose
is
X
thread
or
too
lower
tight
-6-
15.
UPPER
1)
The
10\ver thread tension.
2)
Adjustment
tension
the desired tension can
strength and operating range
16.
nut
LOWER
I)
The
rotating screw A
THREAD
upper
thread
can
be
For special fabric
be
THREAD
lower thread
TENSION
can
be
adjusted
done
by
rotating
sewing
obtained
of
with
by
thread take-up spring.
TENSION
tension
can
(Fig.14)
based
on
the
the thread
special thread,
adjusting the
(Fig.15)
be
adjusted
by
•
•
Thread
tension
~UHl~IA.~
//~/
14
nut
17
ADJUSTMENT
The
feed
(horizontally)
according
to
the material to
1)
Sllghtly loosen
rock shaft crank
2)
Usmg a scre\\driver
groove
a screwdriver. rotate the eccentric shaft
clockwise (to lift the front end) or
counter-clockwise (to lower the
3) When adjustment
A
dog
If
necessary,
located
OF
FEED
has
been
be
screw A located
in
the
is
set
adjust
sewn as follows:
While pressing the
eccentric
completed.
DOG
to
the inclination
in the feed
shaft
rear
tighten screw
INCLINATION
standard
by
using
end).
(Fig.16)
Pos1tion of rnark on
eccentnc
aB-
shaft
Honzontal
[)'
[),
the
Up
Down
Feed dog
t'NN,U,
~
J:i.!~'J
Standard
Front
Front up
(MAX)
down
(MAX)
-7-
18.
ADJUSTI\1ENT
1)
Thread trimmer mechanism as shown
Operation stroke
(I)
Standard operation stroke is
(2) This stroke can be adjusted by using nut A
I FIXed
blade
bracket
~'
Thcead
gu1cle
hxerl
hi;:Hie "'-,
Movable
knde
OF
of
the thread tri1mner solenoid
un11/
),
~
§
·,
\left)
Knde
cr<Jnk
THREAD
Kn1fe base un1t I
/
/
drtvlng
Krn1e cinvrng
Shed!
TRIMMER
J\;1ECHANISM
Fig.l7
6.
0
mm
1 Thread
trnl1rner
solenotd
Twrs1
spnng
/
Collar
ur1d
I
A
Flexible
wtre
"'
"...TWISt
spnng
C:am
crank
follower
(1
I
(;:tl11
crank
follower
(21
Dr~ve
lever
Stopper
',.
plate
Stopper
2)
AdJustment
(I)
Position
Sec the illustration. The standard distances from
the needle
the
respective!~.
(2) Adjustment
solenoid activated, turn on the machine. This
rotates the thread trimming
movable
(left) has
standard engagement
(3) Adjustment
thread
slighth
should
can be adjusted in this
and adjust
of
knife engagement
of
mm
able knife (left) nnd fixed blade.
center
are 6.5 nnn and 3.3 mm from
movable
knife (left) and fixed blade
of
knife
knife (left).
moved
is
poorly cuL pmiicularly
to its farthest distance, the
of
knife engaging pressure.
(fig I R)
engagement
cam\\
When
of
the blade
With the
hich rotates the
the movable knife
1s
1.5-2 0 mm.
when
it
increase the engaging pressure. This
soh
c the problem
The
engaging pressure
\\ay: Loosen lock nut
it
b\ using adjusting sere\\
A.
is
If
thick,
B.
18
1.
5-2.0mrn
Fixed blade
a
Movable
Movable
knife
knife
(left)
(left)
3mm
-8-
Fixed
blade
19. INSTALLING
To
attach the
set screws alternately while lightly
needle
OF
plate,
THE
bring
NEDDLE
the cloth-cutting knife to
pressing
the needle plate onto the cloth-cutting knife.
PLATE (Fig.19)
its
lowest
position,
and
gradually tighten the two
20. CLOTH
l)
Operation
(I)
(2)
2) Attaching the cloth cutting knife
(I)
(2)
3) Changing the cutting width
(I)
(2) When the position
(3) For the standard machine. a 3 2
CUTTING
of
the cloth cutting knife
To actuate the
down knife setting plate
To
stop the cloth-cutting knife and reset the
machine
pull knob 2
Raise
section A
positioned
the
lowest position.
Loosen two knife set screws I. and replace
the cloth-cutting knife.
The
When the needle plate
knife
parallelism
loosen
with the knife blade. Then tighten
to the normal lockstitching mode,
in
the direction
or
lower
of
0-0.5
needle
needle
guiding
is
set
screw
plate
plate
shaft
obtained and the sharpness
KNIFE (Fig.20, 21)
cloth-cutting
1.
the cloth-cutting knife so that
the
cloth-cutting
mm
below
when the knife
decides the cutting width.
set
screw
ofthe
2,
and position the knife so that the blade
knife, press
of
the arrow·
knife
the top face
is
is
replaced. loosen
I so that proper
knife
is
changed
set
screw
mm
wide needle plate
is
of
in its
'-------------~-----------~~---------------
of
the knife blade
in
accordance with the
2.
is
installed
is
increased as shown
change
of
the
needle
at
the time
in
the ligure
of
the needle plate size.
platt
of
delivery
comes
in
contact
21. THROAT PLATE
I) When the
cloth-cuning
COVER
knife
is
not in use.
fit
the throat plate cover. which
-9-
is
provided as an accessory.
onto the throat plate, and press A portion from above.
2)
The throat plate cover
is
now securely fixed. and the hole
22
u
for
the waste cloth
is
closed.
22. OTHER
The standard cutting width
Please choose
I
I
I
ltew
REPLACEMENT
as
follow sheet.
I
4 "
4)
..
MC
MC-D
MC
MC
D
MC
'vH'
D
~JC
MC
D
11
. 8 "
1 u. 2)
'
I
-:
l2 "
I
::J.
•
i
(!.())
I
r~~(i
l (
1H)
I/
(
(i.
of
the machine
NPedle
plate
J-1741187101
1-1741387101
J-17409138001
f-1741587101
PARTS
is
1/8" (3.2mm). We offer the other specs according to your need.
Feed dog
H7404E8001
H7404E8001
H7404E800J
H7404E8001
Presser
J-174091-17101
J-174041-17101
f-174041-17101
H7404H7101
Throat
chip
H572288001
J-1751088001
J-1572288001
J-1751088001
J-1572288001
f-1751088001
J-1572688001
J-1751188001
plate
guard
Chip guard
J-1571988001
J-1571988001
J-1571988001
H572688001
-
10-
A.ARM BED AND ITS ACCESSORIES
1 2
23----o-
44
#
fZ
43
GJ
48~--A9
0
,,
47
•. I
)
~46
~
45
12
/
-
11-
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