HIGHLEAD GC0360-1 User manual

HIGH LEAD
GC0360-1
Purchasing Dept
Copy
Heavy Duty Top And Bottom Feed
Lockstitch Sewing Machine
Instruction Manual
Parts Catalog
SHANGHAI HUIGONG N0.3 SEWING MACHINE FACTORY
From the library of: Superior Sewing Machine & Supply LLC

From the library of: Superior Sewing Machine & Supply LLC

CONTENTS
l.Instruction Manual
1. MAIN SPECIFICATIONS ................................................................................................. 2
2. INSTALL THE MOTOR ................................................................................................... 2
3. CONNECT THE CLUTCH LEVER WITH THE PEDAL ............................................................ 2
4. PREPARATION AND LUBRICATION ................................................................................. 3
5. REPLACE NEEDLES ...................................................................................................... 3
6. NEEDLE, THREAD AND MATERIAL TO BE SEWN ............................................................. .4
7. RUN-IN OPERATION ..................................................................................................... 4
8. THREADING ............................................................................................................... 5
9. WINDING ADJUSTMENT .......................................... , .................................................... 6
10. SET STITCH LENGTH AND REVERSE FEEDING ................................................................. 7
11. POSITION PRESSER BAR ............................................................................................... 7
12. ADJUST THE PRESSURE OF PRESSER EOOT ..................................................................... 8
13. ADJUST THREAD TENSION ........................................................................................... 8
14. ADJUST THREAD TAKE-UP SPRING ................................................................................ 9
15. ADJUST THREAD GUIDE AND THREAD TENSION ............................................................ 10
16. TIME NEEDLE TO ROTAING HOOK ................................................................................ ll
17. REPLACE ROTATING HOOK .......................................................................................... 12
18. ADJUST THE HEIGHT OF FEED DOG .............................................................................. 12
19. ADJUST THE POSITION OF FEED DOG ........................................................................... 13
20. TIME FEED MOTION TO NEEDLE MOTION ..................................................................... 13
21. ADJUST OPENING TIME OF THE TENSION DISCS ............................................................ 14
22. LUBRICATION ADJUSTMENT ....................................................................................... 15
23. REGULARCLEANING ................................................................................................. 16
2.Parts Catalog
A ARM BED AND ITS ACCESSORIES ................................................................................... 17
B.SEWING MECHANISM .................................................................................................... 20
C. FEEDING AND FEED LIFTING&LOWER SHAFT MECHANISM .............................................. 23
D. STITCH REGULATOR MECHANISM ................................................................................ 26
E. PRESSER FOOT MECHANISM .......................................................................................... 28
F. UPPER FEED LIFTING ROCK SHAFT MECHANISM ............................................................ 30
G. OIL LUBRICATION MECHANISM ..................................................................................... 33
H. OIL RESERVOIR AND OTHERACCESSORIES ..................................................................... 35
I. BONNIN WINDER MECHANISM ....................................................................................... 37
J. ACCESSORIES ............................................................................................................... 39
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1. MAIN SPECIFICATIONS
1) Sewing material:
2) Max. sewing speed:
3) Needle:
4) Needle bar stroke:
5) Lubrication:
6) Stitch length:
7) Presser fool lift:
Standard
2000 spm.
DPX 17 No.l8-No.22
35mm.
Automatic
0-8mm.
6mm (by hand) 13mm (by knee).
2.INSTALLTHE MOTOR ( Fig.l)
Align Motor Pulley Groove ( B ) and Balance Wheel Groove ( A ) by moving the motor leftward or
rightward.
x+-+
Fig. 1
3. CONNECT THE CLUTCH LEVER WITH THE PEDAL ( Fig.2 )
1) The optimum tilt angle of pedal ( A ) is approximately 15 deg.
2) Adjust Clutch Cover ( D ) so that Clutch-Lever ( C ) and Draw Bar ( B ) run in line.
3) The balance wheel should rotate counter-clockwise when viewed from the outside of Balance
Wheel (G). The direction of the motor pulley rotation can be reversed by reversing ( turning
over 180 deg . ) the power plug of the motor. .----------------------,
4) Adjust the tension of V-belt ( F ) by
turning Motor Vertical Position Screw ( E).
The proper tension of the V-belt is a slack
of 10-20mm when the belt is depressed at
the center of the belt by finger.
Fig.2
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E----':~ . .....,.~~
o---~~.u
c------,
8----¥
A
X
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4. PREPARATION AND LUBRICATION ( Fig.3)
1) Cleaning the machine
Before leaving the factory, the machine parts are coated with rust-preventive grease, which may be
hardened and contaminated
by dust during storage and shipment. This grease nrust be retooved with gasoline.
2) Examination
Though every machine is confirmed by strict inspection and test before leaving the factory, the machine
parts may be loose or deformed after long distance transportation with jolt. A thorough examination must be
performed after cleaning the machine. Turn the balance wheel
to see if there is running obstruction, parts
collision, uneven resistance or abnormal noise.
If these exist, adjustment must be made accordingly before run-in
operation.
3) Oiling
( 1) Required atoount of oil.
Line ( A ) on the oil reservoir: Max. oil level.
Line ( B ) on the oil reservoir: Min. oil level.
If oil level goes down under line ( B ),
oil cannot be distributed to eachpart of the machine,
thus causing the parts a seizure.
(2) Replenishing
Always use only N
o.l8 special machine oil
for high speed sewing. Be sure to replenish oil to
Line ( A) before starting operation.
(3) Replacing oil
A 8 c
Fig.3
To replace oil, remove Screw ( C ) to drain oil. After completely draining off oil, clean the oil reservoir and
securely tighten Screw ( C
), then fill the reservoir with fresh oil.
5. REPLACE NEEDLES ( Fig.4)
Turn the balance wheel to lift needle bar to the upper end of its stroke. Loosen Needle Clamp Screw 1.
While keeping the long groove of the needle leftward fully insert the needle shank up to the bottom of the needle
socket. Then tighten Needle Clamp Screw
A.
Note: Fig. ( b ): insufficient insertion.
Fig.
(c): wrong direction oflong groove.
)(
Long groove c Fig.4
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6. NEEDLE, THREAD AND MATERIAL TO BE SEWN
Needle Size Thread Number Material
No.I6
No.30-No.50 Muslin,Woolen,Tarpaulin,Thin
Leather
No.22 Mediwn leather,Canvas
7. RUN-IN OPERATION (Fig. 5)
Run-in operation is required for a new sewing machine, or a sewing machine left out operation for a
considerable length
of time.
I) Retmve Red Rubber Plugs
(A) on the top of the arm and replenish sufficient a:rmunt of oil
2) Lift Presser Foot ( B ).
3) Run the machine at a low speed ( 2000-2500spm) to check oil distributing condition through Oil Check
Window(
C).
4) Perform run-in operation at 2000-2500spm for 30rninutes. After a lapse of one month of service during
which the working speed is increased gradually and the machine runs sufficiently well, the high speed 5000spm
can be adopted according to the nature of the work.
Fig.5
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8. THREADING ( Fig.6)
To thread the needle thread, raise needle bar to the upper end of its stroke, lead the thread from spool and
perform threading as shown in Fig.6 .
To draw the bobbin thread, hold the end of the needle thread and turn the
balance wheel
to lower the needle bar and then to lift it to its highest position. Pull the needle thread and the
bobbin thread
is drawn up. Put the ends of needle thread and bobbin thread frontward under presser foot.
Fig. 6
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9. WINDING ADJUSTMENT ( Fig.7)
l) The wound bobbin thread should be neat and tight, ifnot, adjust the winding tension by turning Tension
Stud Nut ( A ) ofbobbin winder tension bracket.
Note: nylon or polyester thread should be wound with little tension, otherwise, Bobbin ( D ) might break or
deform
2) When the wound thread layer does not present a cylindrical shape as shown in Fig.7 ( a), loosen Set
Screw
(B) ofbobbin winder tension bracket and slide Bracket (C) leftward or rightward. If thread is wound as
shown in Fig.7 ( b ), move the bracket rightward, but if thread is wound as shown in Fig.7 ( c ), move the bracket
leftward.
After adequately positioning the bracket, tighten Set Screw ( B
).
3) Do not overfill the bobbin. The optimum length of thread will fill about 80% of bobbin capacity. This can be
adjusted
by Adjusting Screw ( E ) ofbobbin winder stop latch.
a b c d
Fig. 7
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10. SET STITCH LENGTH AND REVERSE FEEDING ( Fig.8)
1) Stitch length can be set by turning Dial ( A).
2) The figures on Face (B) of dial show stitch length in mm.
3) Reverse feeding starts when Reverse Feed Lever ( C ) is depressed, and the machine will feed forward
again
if Reverse Feed lever ( C ) is released.
Fig.8
ll.POSITION PRESSER BAR ( Fig.9)
1) Loosen lock Nut (E) and Pressure Regulating Thumb Screw (A).
2) Remove rubber plug from Face Plate (B).
3) Loosen Screw ( C ) and adjust the position of Presser Bar ( D ) till the presser foot is 6 mm above the
throat plate will the presser foot lifted
to its highest.
4) Tighten Screw
(C) and put in the rubber plug.
5) Tighten pressure Regulating Thumb Screw
(A) and Lock Nut (E).
Fig.9
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12. ADJUST THE PRESSURE OF PRESSER EOOT ( Fig.10)
Pressme of presser foot is to be adjust in accordance with thickness of materials to be sewn.
First loosen Lock
Nut ( A ). For heavy materials, tmn the pressme regulating thumb screw as shown in
Fig. I0 ( a )
to increase the pressure, while for light materials, tmn the pressure regulating thumb screw as shown
in Fig. I0 ( b )
to decrease the pressure. Then tighten Lock Nut (A).
The pressure of presser foot is recommended to be less as long as normal feeding is ensmed.
a b
Fig. 10
13. ADJUST THREAD TENSION ( Fig.1l,12)
In principle, thread tension is to be adjusted in accordance with materials, thread and other factors.
In practice, thread tension is adjusted according
to the stitches obtained. The needle thread tension should
be adjusted with reference to the bobbin thread tension. Turn Tension Spring Regulating Screw ( A ) of bobbin
case clockwise for trore tension, or tmn the screw counter-clockwise for less tension.
It
is common practice to test the bobbin test the bobbin thread tension as shown in Fig.l2 . Hold the end of
the thread from delivery eye. If the bobbin case is falling slowly, the proper tension is obtained. The needle
thread tension can
be adjusted by setting ( 1 ) the take-up spring tension. ( 2 ) the thread take-up spring stroke
and ( 3 ) tension spring. All these adjustments will
be described in the following.
r-------~-------------------.
/
Fig. 11 Fig. 12
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14. ADJUST THREAD TAKE-UP SPRING ( Fig.13,14)
1) Adjusting the thread take-up spring tension
Loosen Set Screw ( A ), turn Tension Stud ( B ) clockwise to increase
the spring tension, or turn the stud
counter-clockwise to decrease
the spring tension. After the adjustment, be sure to tighten Set Screw ( A). The
thread take-up spring tension
should be about 30g. To Attain this. First loosen Set Screw ( A), turn Tension Stud
( B ) counter-clockwise to decrease the tension of Thread Take-up Spring ( C ) to zero, then turn Tension Stud
( B ) clockwise until Spring ( C ) comes to the notch of thread tension regulatingbushing, and again turn Tension
Stud ( B ) halfway back ( counterclockwise ) After the adjustment. Tighten Set Screw ( A).
Fig. 13
2) Adjusting the thread take-up spring stroke
Loosen
Set Screw ( B ), turn Stud ( C ) clockwise to increase the stroke or turn Stud ( C )
counter-clockwise to decrease the stroke. After the adjustment, tighten Set Screw (B).
Before leaving the factory, the thread take-up spring has properly been adjusted. Readjustment is needed
only in the case of special material or special thread.
.-----~----------------------------~
,--------< A
Fig. 14
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15. ADJUST THREAD GUIDE AND THREAD TENSION ( Fig.15,16)
The position of the thread guide affects stitch tightness and therefore must be adjusted according to sewing
materials and sewing conditions.
1 2 3
Thread guide position Leftward Center Rightward
Material weight Heavy Medium Light
Fig15 shows different stitch forms. Normal stitch form should
be as
shown in Fig.15 ( a ). When abnormal stitches cause puckering
and thread break-age, the tension
of needle thread and bobbin
thread mustbe adjusted accordingly. Fig.
15
a
b
c
d
e
1) In case needle thread tension is too strong or bobbin thread tension is too weak, as shown in Fig.15 ( b ), turn
the thumb nut counterclockwise to decrease the needle thread tension, or tighten the tension spring regulating
screw ofbobbin case to increase the bobbin thread tension ( See Fig.16 )
2) In case needle thread tension is too weak or bobbin thread tension is too strong,
as shown in Fig.15 (c), turn
the thumb nut clockwise to increase the needle thread tension, or loosen the tension spring regulating screw of
bobbin case to decrease the bobbin thread tension.
3) In case
of the stitch forms as shown in Fig.15 ( d ) and ( e ), adjustments can be made with reference to the
above means.
•
Fig. 16
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16. TIME NEEDLE TO ROTAING HOOK ( Fig.17,18,19,20)
A. Adjusting the needle position ( See Fig.l7 )
1) Turn balance wheel by hand to bring Needle Bar (C) to the lowestposition of its stroke.
2) Remove rubber plug from Face Plate
(A).
3) Loosen Set Screw (B) of needle bar adaptor.
4) Move Needle Bar
(C) vertically to adjust needle timing.
5) After the adjustment, tighten Set Screw ( B ) and put in the rubber plug. The standard needle timing ( See
Fig.18 )
is to align Timing Mark ( B ) on the needle bar and the bottom of Needle Bar Bushing ( A) and
meanwhile align the Inner Surface
(E) of the hook and the center ofNeedle Eye (D) when the needle bar gets
down
to its lowest position.
Fig. 18
Fig. 17
B. Adjusting the hook point timing
Timing
of needle motion to rotating hook motion has a great effect on sewing performance. The standard
hook point timing
(See Fig.l9) is to align Hook Point (D) and Needle Centerline (C) when Needle Bar (B)
is lifted by 2.2nnn from the lower end of its stroke. Besides, Hook Point ( D ) should be l.0-1.5nnn above the
upper end
of needle eye (E).
When adjusting the hook point timing, also notice that the clearance between the bottom of needle notch
and Hook Point
(C) should be approx. 0.05nnn ( See Fig.20)
0. 05mm
Fig. 19
Fig. 20
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17. REPLACE ROTATING HOOK ( Fig.21)
1) Lift needle bar to the highest position of its stroke.
2) Remove throat plate, take down needle and bobbin case.
3) Loosen Screw
(C) of hook positioner and take down Hook Positioner (A).
4) Loosen two Screws (D) of rotating hook
5) Turn balance wheel to raise feed bar
to its highest position, then take down the rotating hook by turning it
away from feed bar.
6) Installing the hook can be done in reverse sequence. Note that Needle ( 8 ) and the convex surface of
Hook Positioner (A) should align with a clearance of 0.5-0.7mrn between them
0. 5-0. 7mm
Fig.21
18. ADJUST THE HEIGHT OF FEED DOG ( Fig.22,23)
1) Turn balance wheel until feed dog is lifted to its highest position from throat plate surface.
2) Loosen Screw (A) of feed lifting rock shaft crank right ( See Fig.22,b )
3) Move Feed Bar ( 8 ) in the direction shown by the arrow in Fig. 22 ( a ) to adjust the height of the feed
dog. The standard height
of feed dog is that the top of feed dog is 0.8mm above Throat Plate Surface
( 8 ).
4) After the adjustment, be sure to tighten Screw (A).
a b
Fig. 22 Fig. 23
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19. ADJUST THE POSITION OF FEED DOG ( Fig.24,25)
The standard position of feed dog is that the clearance between the front end of the throat plate slot and the
first tooth of the fully advanced feed dog is 1nnn, as shown in Fig.24.
I) Fully advance the feed dog toward the front end of the throat plate slot.
2) Loosen Feed Rock Shaft Crank Screw (A). See Fig.25( b).
3) Move Feed Bar ( B ) in the direction shown by the arrow in Fig. 25 ( a ) to adjust the feed dog position.
4) After the adjustment, be sure to tighten Screw (A).
b
Fig.24 Fig.25
20. TIME FEED MOTION TO NEEDLE MOTION ( Fig.26,27,28)
The standard timing of feed motion to needle motion is that the top of feed Dog ( C ) is flush with Throat
Plate Surface ( B ) when the point ofNeedle (A) reaches Throat Plate Surface (B). See Fig.26 .
®~----L
Fig.26
Fig.27
Iffeed trotion is not timed to needle trotion, adjust as follows ( See Figs.27 and 28 ).
I) Retrove ArmSide Cover (F).
2) Loosen Set Screws ( A) and ( D ) of feed and feed lifting eccentric.
3) Hold Feed and Feed Lifting Eccentric ( B ) and turn Balance Wheel ( E) slowly until the upper edge of
Arm Shaft Oil Hole ( C ) aligns with the lower edge of Reference Hole ( G ) of feed and feed lifting
eccentric.
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Fig.28
21. ADJUST OPENING TIME OF THE TENSION DISCS ( Fig.29)
within the presser foot lift range of2-7nnn opening time of the tension discs can be adjusted as follows:
1) Reroove the rubber plug from the back of arm and loosen Screw (A) of knee lifter lever ( left).
2) Move the tension releasing
cam leftward for earlier opening or rightward for later opening. It will facilitate.
the adjustment
to put under the presser foot a block as thick as the presser foot lift.
3) After the adjustment, fully tighten Screw
(A).
----Cam
Fig.29
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22. LUBRICATION ADJUSTMENT ( Fig.30)
A Adjusting oil pump.
In ordinary operation, adjustment is not required for the oil pump. If oil splashing does not occur in the oil
check window when the machine runs at a
low, speed ( approx.2000spm ), reduce the clearance of the by-pass
hole.
B. Adjusting the lubrication of rotating hook
The lubrication
of the rotating hook can be adjusted by Oil Adjusting Screw (A) as follows:
1) Turn Oil Adjusting Screw ( A ) clockwise to increase oil and turn Oil Adjusting Screw ( A )
counterclockwise to decrease oil.
2) Oil Adjusting Screw ( A) adjusts oil amount within 5 turns. When Oil Adjusting Screw ( A) is fully
tightened, oil atmunt is maximum
3) Readjustment depends
on temperature, sewing speed and the like. In practice, oil amount can be judged
as follows: remove the throat plate and place a piece of paper on instead, run the machine for about 20 seconds,
then check the oil splashed on the paper.
A
Fig.30
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23. REGULAR CLEANING ( Fig.31,32,33)
l) Cleaning feed dog( See Fig.32 )
Remove the throat plate and clear off the dust and lint between feed dog tooth slots.
Feed dog
Hook
Feed bar
Fig.31 Fig.32
2) Cleaning rotating hook (See Fig 33 )
Swing out the machine head and clean the hook. Wipe the bobbin case with soft cloth.
3) Cleaning oil pump, screen (See Fig.34)
Swing out the machine head and clear off the dust and dirt on oil pump screen.
Screen
Fig.33
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A.ARM BED AND ITS ACCESSORIES
10 13 11 12 14 38
\
5
36--6
6
40
33
29
6
28
23
41
31
42
27
43
26 25
"')
32
24
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A.ARM BED AND ITS ACCESSORIES
Fig. Part No. Description Pes. Remarks
No.
A01 HB12538081
Arm
1
A02 HB12588081 Trade
mark plate 1
A03 H924025050 rivet 4
<P2.5x5
A04 H005008060 Spring washer 2 GB/T93 6
AOS
H2100B2050 Face plate 1
A06 HA30780674 Rubber plug
(<!>11.8 ) 1
A07 HA60780671 Thread guide
on face plate 1
A08 HA10680676 Thread guide screw 1 SM9/64(40)x6
A09 HA700B2030 Face plate screw 3 SM11164(40)X10
A10 H210082070
Arm sidecover(letl) 1
All
H210082080 Arm sidecover(right) 1
A12 HB12598081 Gasket for
arm side cover 1
Outsourcing
Al3 HA30082170 Screw group 8 SM11/64(40)x9
A14 H1210B0671 Check window 1
A15 HA11280691 Screw type tension stud 1
A16 HA11280692 Spring for pre-tension 1
A17 HA112B0693 Disc for pre-tension 2
Al8 HA112B0694 Spacer for pre-tension 1
A19 HA112B0695 Pre-tension thread guide 1
A20 H007013030 Stop ring 1 GB/T896 3
A21 HA10082100 Three-hple thread guide 1
A22 HA100B2110 Set screw 1 SM11/64(40)x5.5
A23 HA11580701 Thread tension stud 1
A24 HA31080701 Oil thumb nut 1
A25 HA505B0671 Thread tension spring 1
A26 HA31080702 Thread tension releasing disc 1
A27 HA31080705 Thread tension disc 2
A28 HA50580672 Thread take-up spring 1
A29 HA31080703 Thread tension regulating bushing 1
A30 HA115B0708 Set screw 1 SM9/64(40)x6
A31 HA115B0709 Thread tension releasing pin 1
A32 HA11587010 Stop disc 1
A33 HA11587011 Rubber ring 1
A34 HA30082080 Set screw 1 SM 15/64(28)x6 8
A35 HA60082050 Thread guide at arm center 1
A36 HA30082090 Rubber plug
(<!>8.8 ) 2
A37 HA30082100 Rubber plug
(<!>27 ) 1
A38 HA30082110 Red rubber plug
(<!>5.7)
2
A39 H210082120 Needle plate 1
A40 HA30082190 Needle plate screw 2
SMII/64(40)x4.5
A41 HA124B0711 Slide plate 1
A42 HAI24B0712 Slide plate spring I
A43 HA12480713 Screw 2 SM3/32(56)x2.2
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