typical GC6-7D Instruction Book & Parts Catalogue
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typical GC6-7D Instruction Book & Parts Catalogue

Compound feed lockstitch sewing machine
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GC6-7D
INSTRUCTION BOOK // PARTS CATALOGUE

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Summary of Contents for typical GC6-7D

  • Page 1 GC6-7D INSTRUCTION BOOK // PARTS CATALOGUE...
  • Page 2 1 .Main technical specifications 2.Preparation Application: medium and heavy-duty (1)Cleaning machine Max sewing speed :3000 spm Clean off the grease and dusts on the Surface of ma- Max stitch length: 0~8mm chine with gasoline and soft cloth. ≥ Presser foot lift: hand 6.5mm,knee controlled 13mm (2)Inspection Needle: Model DPX17#18~#22 Before use a thorugh inspection should be done...
  • Page 3 5 .Installi ng belt guard(Fi g.3) The belt guard should be installed for safety. 6 .Installi ng the bobbin wi nder (Fig .4) Align pulley (B) of the bobbin winder with the outside of the belt, and there should be a proper clearance between them, so that pulley (B) can be contacted with the belt when stop latch thumb lever (A) is depressed, thereby the belt drives pulley (B)
  • Page 4 8 .Trial run (Fig.6) The machine is designed specially with plunger automtic lubricating system, so it can run with nor- mal speed. In ordervto increasing the using time of machine, when the machine left outvof operation for a quite long time is used again. Turn off the rubber plug top of the machine head, oil it thoroughly, then lift the presser foot and run at a low speed with 1500 spm, observe the spurt through oil flow window,...
  • Page 5 9 .Rotating hook okl amount adju stme nt ( Fig. 7) The hook oil amount can be adjusted by screw “ ” (A). Turn it clockwise ( + ) to increase amount: counter-clockwise ( - ) to decrease. The oil amount “...
  • Page 6 1 1.Ins tal ling the needle (Fig. 9) Turn the balance wheel to lift the needle bar to its highest point, loosen needle set screw 1, making the needle groove turn to the left side of an opera- tor, fully insert the needle shank up to the bottom of needle socket, then tighten needle set screw 1.
  • Page 7 (2) To left pass down thru the right hole, to left up thru the middle hole and to left down thru the left hole of thread retainer ② ③ (3) Pass down thru between two tension disc (4) To left and up pass thru the hook of thread ④...
  • Page 8 15.Se tt in g t he s tit ch l en g th and controlling the reverse sew in g (F i g Stitch length can be set by turning stitch length regulating dial (A). The stitch length is longer when turning stitch length regulation dial (A) counter clock- wise.
  • Page 9 18.Adjusting the thread tension (Fig.16、17) In general, the thread tension s to be adjusted in accordance with materials thread and others. In practice, the thread tension is adjusted ac- cording to the stitches resulted and has the normal stitches. The needle thread tension should be adjusted with referance to the bobbin thread tension.
  • Page 10 2) Adjusting the sewing range of t hread take-up spring (Fig.19) Loosen set screw (B), turn tension complete (C) clockwise to increase the sewing range or turn tension complete (C) counter clockwise to decrease the sewing range. Before delivery, the thread take-up spring is properly adjusted, Readjustment is needed only in the case of sewing special materials or with special thread.
  • Page 11 (b) The needle thread tension is too weak or the bobbin threal is too strong, turn the tension regulating thumb nut clockwise to make the needle thread get more tension or turn the bobbin case tension regulating screw counter clockwise with small plastic screw driver to make the bobbin thread get less tension (Fig.22) (c) Other abnormal stitches as shown in Fig.20...
  • Page 12 2 Adjusting rotating hook point timing with 1.2mm needle. The motive relation between rotating hook and needle affects the sewing quality. Standard timing relation is : turn the balance wheel to locate needle 2.5mm bar to its lowest position, and lift back 2.5mm the rotating hook point (D) should be coincides with needle center line (C), and hook point (D) is 1.2mm above the upper edge (E) of needle eye.
  • Page 13 To adjust the position of feed dog, move feed dog to the front end of throat plate. Loosen Screw A (See Fig.29b), move feed dog support B in the di- rection shown by arrow to adjust After adjustment tighten Screw A. 2 4.Fee d do g horizontal Adjustmen t (Fi g.3 0) Feed dog is 0.8~1.2mm above the surface of throat plate horizontally.
  • Page 14 26.Feed timing (Fig.32、33、34) 1 Standard position Turn balance wheel to lower Feed dog A till it is horizontal with the surface B of throat plate, at the moment, the tip of needle C should be horizontal with the surfaces of throat plate and feed dog. Adjustment can be done by adjusting the position of feed cam and feed dog lift cam.
  • Page 15 2 7.Adj ust ing the tension releasi ng me cha nism ( Fig .35) The tension discs should be pushed apart to open when the presser foot is lifted. But the open timing of the tension discs can be adjusted as follows: Romove face plate and the rubber plug at rear side Right Left...
  • Page 16 29.Ad ju st in g pr ess er foo t al ter nate lift mechanism (Fig.38 ) The alternate lift mechanism can be adjusted according to the nature of material in a certain range. Of common heavy and medium sewing machine, the presser foot lift amount is about 2.5mm and that of the follow presser foot is within 5mm.
  • Page 17 31.Adjusting the clearance between presser foot and follow presser foot (Fig.4 In sewing operation, for prevent the follow pre- sser foot from striking on presser foot at the end of feeding, a proper clearance C of approx. 1mm should be maintained between them. When the clearance is too small or too big nec- essary to adjust, loosen the crank clampin screw and turn down the needle bar shaft, then the follow...
  • Page 18 1.Arm and bed 50 49 12 14 13 38 39 51 52 10 34 45 44 26 25 17 18 -17-...
  • Page 19 1、Machine Arm And Bed 1.Arm and bed Part number Name Remark 6WF4-001 4WF1-001 6WF1-002 Trade Mark Rivet 35T4-402a Face Plate 22T1-003C2 Gasket For Face Plate Φ 22T1-003C3 Rubber Plug ( 19) 22T1-003C4 Rubber Plug Rubber Plug 22T1-003C5 Thread Finger 22T1-003C6 Screw 22T1-004 Screw...
  • Page 20 2.Needle bar and thread take-up Arm shaft and vertical shaft -19-...
  • Page 21 2.Needle bar and thread take-up Arm shaft and vertical shaft 2、Arm And Vertical Shafts, Needle ber Threed Take-up Parts Part number Name Remark 4WF1-001A Arm Shaft 22T3-001A2 Rubber Plug Φ 7.4~10 22T3-002B1 Colla 22T3-002B2 Screw 33T1-007D1 Front Bushing 4WF1-002 Middle Bushing Screw J0.0.40 22T3-005...
  • Page 22 3.Feed dog lift and feed and thread looping -21-...
  • Page 23 3、Feed Dog Lift And Feed And Thread Looping 3.Feed dog lift and feed and thread looping Part number Name Remark 35T2-201 Feed Dog 36T4-001AIa Feed Dog Support Complete 51T5-001AIb Washer 36T4-001A2 Eccentric Shaft J0.051 Screw 4WF2-002 Feed Dog Suppout Crank J0.0.71 Screw 22T2-019...
  • Page 24 4.Feed adjustment -23-...
  • Page 25 4.Feed adjustment 4、Feed Mechanism Part number Name Remark 36T5-001 Link Pin 4WF2-005 Stitch Length Bracket 22T6-008D3 Screw 22T5-010D4 Screw 5WF1-003 Bushing 22T5-004 Shaft For Stitch Length Bracket 36T5-003 Rubber Plug J0.0.40 Set Screw 36T5-004B1 Reverse Feed Lever Crank 22T5-012E10 Shaft For Block 22T5-012E2 Spring 22T5-013...
  • Page 26 5.Presser foot -25-...
  • Page 27 5、Presser Foot 5.Presser foot Part number Name Remark 33T3-003 Presser Foot Lift Bar 22T7-001A2 Screw 4WF3-001 Presser Bar Lever Cam Oil Seal 22T7-004B1 Knee Lifter Lever (left) Complete 22T7-004B1a Lever (left ) 22T7-004B1b Thread Releasing Cam 22T7-004B1c Screw 22T7-004B2 Screw 22T7-004B3 Knee Lifter Drawing Bar 22T7-005A...
  • Page 28 6.Upper feed -27-...
  • Page 29 6 Upper Feed Parts 、 6.Upper feed Part number Name Remark 34T5-501 Oil Felt 35T5-503 Screw 34T5-503 35T5-501 Spring J0.0.40 Screw 35T5-504 Shaft For Needle Bar Motion Bracket 35T5-505 Reel For Spring 35T5-507 Link 35T5-508 Adaptor 6WF5-002 Slot For Sliding Block 33T1-013 Sliding Block 34T5-507...
  • Page 30 7.Oil pump -29-...
  • Page 31 7 Oil Pump 、 7.Oil pump Name Part number Remark 22T8-001 Oil Pump 22T8-002 Screw 22T8-003 Screw 22T8-004 Screw Washer 22T8-006 Cover For Oil Pump 22T8-007 Adjusting Plate For Oil Pump 22T8-008A Filter Complete 22T8-009 Screw 22T8-010B Oil Pipe 22T8-11C Oil Wick Set Plate Complete 22T8-012 Screw...
  • Page 32 8.Oil reservoir and accessories -31-...
  • Page 33 8、Oil Reservoir And Accessories 8.Oil reservoir and accessories Name Part number Remark 4WF5-001 Oil Reservoir 22T9-001A2 Screw 22T9-001A3 Washer 2KT9-008 Gasket 22T9-001A6 Hinge Pin 22T9-001A7 Spring 22T9-001A8 Knee Lifter Stop Bracket 22T9-001A9 Screw 22T9-001A10 22T3-007C2 Screw 22T9-003B1 Knee Lifter Prop Bar 22T9-003B3 Connector 22T9-003B4...
  • Page 34 Certifi cate of the Certifi cate of the Certifi cate for Certifi cate for Energy international ISO9001 ISO14001 international CE Ecolabelling Product Conservation Product XI´AN TYPICAL EUROPE GmbH Hertelsbrunnenring 9 D-67657 Kaiserslautern Tel.: +49 (0)631 316019-0 Fax: +49 (0)631 316019-11 E-mail: sales@typical-europe.com www.typical-europe.com...

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