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Baby Lock
BL-101, BL-450, BL4-838D
BL-5180, BLE1, BLE1SX
BLE1DX, BLE1AT, BLE3ATW
BLE8, BLE8W and BLCS
Service Manuals

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Summary of Contents for Baby Lock BL-5180

  • Page 1 Baby Lock BL-101, BL-450, BL4-838D BL-5180, BLE1, BLE1SX BLE1DX, BLE1AT, BLE3ATW BLE8, BLE8W and BLCS Service Manuals...
  • Page 2 SERVICE MANUAL Model BL-101...
  • Page 3 1. Position of needle a) Set needle holder to extreme right position. b) Adjust the distance of needle holder 2. Adjustment of needle guards and needle guide plate Set needle slightly right-down ward in order to make its penetration stronger.
  • Page 4 3. Adjustment of looper position 3-1 Adjustment of top and bottom position 3-2 Clearance between the looper tip and the needle 3-3 Distance from the eye of needle to the looper tip...
  • Page 5 4. Adjustment of timing of cloth lifter Set skip-stitch dial at “skip” position when you adjust the timing. 6. Adjustment of the height of cloth lifter Set stitich-depth dial at 3. (centre.) 7. Adjustment of cloth presser Make sure both left and right cloth pressers to hold the cloth lifter. (No 005226 ~ )
  • Page 40 SERVICE MANUAL MODEL BLCS Serial Numbers For Europe, For Canada For U.S.A. Australia,NZ 100176 100051 100333 From 100060 100389 100382 Vol 2.0...
  • Page 41 1.Construction of Covers Adjusting gauge For BLE8 Distance of chain looper tip from center of chain looper shaft 72.8 55.4 Distance of lower looper tip from center of lower looper shaft Distance of lower looper tip Distance of upper looper tip from right side of overlock from right side of overlock right needle(O...
  • Page 43: Height Of Feed Dog

    3. Height of feed dog CORRECT HEIGHT – When feed dogs are top position, make sure the clearance of 0.9mm between presser foot and needle plate. 4. Tension release & Dropped feed dog adjustment 4-1.Tension release a) In case you replace face cover, make sure the tension release lever catches the Tension release pin correctly (fig.A) b) Double check disks are open perfectly when presser bar lifter is lifted.
  • Page 44 3.Height of feed dog 4.Tension release & Dropped feed dog adjustment...
  • Page 45 5. Checking threading steel pipe joint a) Set the machine for looper threading. b) Move the lock button release lever slightly to the right. c) Check the connecting point whether the looper threading pipe joint and threading steel pipe is fitted each other properly. 6.
  • Page 46 5.Checking thread steel pipe joint Threading steel pipe Joint Unproper position Proper position 6.Checking pump...
  • Page 47: Troubleshooting

    7. TROUBLE SHOOTING 7-1 NEEDLE THREADS ARE UN BALANCED ; * Is the BLCS threaded correctly? See Instruction Book P.14,15. * Are the threads snapped in the head guide? See Instruction Book P.15. * Are the threads recommended high quality? See Instruction Book P.7 .
  • Page 48: Basic Adjustment

    SERVICE MANUAL Basic Adjustment MODEL BLE1 BLE1SX BLE1DX BLE1AT BLE3ATW BLE8 BLE8W BLCS Serial Numbers Canada Au. N.Z U.S.A. 8W: 101201 8W: K6 104507 8W: 100231 8W: 101484 From 8: 501001 ATW: K6 148120 ATW: 103681 ATW: 101141 ATW: 101081 AT: K6 104551 AT: 307467 AT: 705451...
  • Page 49 1.NEEDLE NOTE: Before all adjustment, you are required to change all needles to new and correct ones. Needle System : ELx705CF ORGAN (SCHMETZ) Model : BLE8, BLE8W, BLE5, BLCS Plating : Chrome Front Groove Back Groove Needle System : HAx1SP/CR ORGAN (SCHMETZ) Model : BLE1SX, DX, LX, AT, ATW, BL101 Plating : Chrome Front Groove...
  • Page 50 2. ADJUSTMENT OF NEEDLE AND PRESSER FOOT HEIGHT a) Height of needle Turn handwheel, and bring the needle to the highest position. Loosen screw "A", and turn the eccentric shaft to clockwise or counter-clockwise. Clockwise ------------------- Lower needle Counter-clockwise--------- Raise needle Height of needle Organ Organ...
  • Page 51: Lower Looper Adjustment

    3. LOWER LOOPER ADJUSTMENT NOTE: After adjusting loower looper, you are required to check JET AIR THREADING. a) Replacement of lower looper Lower looper fixing screw Slide the pipe rubber, and loosen the screw. Replace new lower looper, and slightly tighten the screw. Adjust the radius 55.4mm 0.1, and firmly tighten the screw.
  • Page 52: Upper Looper Adjustment

    5 . UPPER LOOPER ADJUSTMENT NOTE: After adjusting upper looper, you are required to +0.3 check JET AIR THREADING. a) Replacement of upper looper Slide the pipe rubber, and loosen the screw. Upper looper fixing screw Replace new lower looper, slightly tighten the screw. The distance from looper from shaft is approx.
  • Page 53: Feed Dog Height Adjustment

    6. FEED DOG ADJUSTMENT a) FEED DOG HEIGHT ADJUSTMENT Loosen two screws "A" , rotate adjusting screw clockwise or counter-clockwise. Clockwise-----------------------Raise feed dog Counter-clockwise------------Lower feed dog Presser foot Pressure Clockwise Raise Screw A Counter-clockwise Lower Adjusting screw a) FEED DOG POSITION ADJUSTMENT Condition : Stitch Length 4 Differencial Feed N The minimum distance between needle plate and main/sub...
  • Page 54 7. Differential feed adjustment Correct positon : On condition diff.lever "N" position and stitch length dial "4", main feed dog(rear) and sub feed dog (front) move same length. How to adjust a) Move differential feed adjusting lever to get same moving length of main and sub feed dog.
  • Page 55 8-1. REPLACEMENT OF CHAINING TONGUE (EXCEPT BL3ATW) a) Remove needle plate. b) Loosen two screws of chaining tongue Cover plate cover plate and remove it. Cheining tongue c) Watching carefully not to jump out steel ball, remove chaining tongue and replace it. d) You are requied to check the fixing position of the chaining tongue, after replacing it.
  • Page 56: Replacement Of Knives

    9. REPLACEMENT OF KNIVES UPPER KNIFE a) Remove upper knife and replace it. b) Fixing screw temporaly, turn the hand pulley and bring the upper knife to the lowest positon. c) Adjust upper knife to be 1-1.5mm overlapping with cutting face of lower knife. d) Tighten firmly fixing screw.
  • Page 57: Cutting Width Adjustment

    11. CUTTING WIDTH ADJUSTMENT 0.1mm a) Cut 1 layar cotton fabric and make a cutting width 3.7 0.1mm between the eye of needle and the edge of fabric. Machine Settings Needle : Right Needle(O2) Thread : No Use Stitch Width : M Stitch Length: 2.5 Differencial feed : N Fabric : Cotton broad 1 layer...
  • Page 58 12.Adjustment of Thread sensor cable The NEEDLE THREAD SENSOR CABLE effects the timing of Both NEEDLE THREAD and LOOPER THREAD. The LOOPER THREAD SENSOR CABLE effects the timing of LOOPER THREAD. You are required to adjust NEEDLE THREAD SENSOR CABLE first. Turn Clockwise Become Loose Turn Counter-clockwise...
  • Page 59 13. TROBLESHOOTING GUIDE FOR JET-AIR THREADING (EXCEPT BLE1SX) NOTE: Before adjustment of JET-AIR THREADING SYSTEM, please check the following items. 1 Is the machine lock button engaged? 2 Is the looper threader selector at the appropriate setting? "U" position for Upper Looper "L"...
  • Page 60 13. TROBLESHOOTING GUIDE FOR JET- AIR THREADING (EXCEPT BLE1SX) NOTE: In case that the looper threader does not work properly, please check and confirm the following points. Search the spot that has a problem a) Check whether the pump works properly or not. Depress the looper threading lever while pinching the cylinder tube between your thumb and fingers and check whether there is an air leak or not.
  • Page 61 14. ADJUSTING GUIDE FOR JET- AIR THREADING (EXCEPT BLE1SX) a) In case that there is an air leak in the pump 1) Remove piston driving arm fixing screw. 2) Remove piston driving arm from piston driving shaft and then draw out the piston assembly from cylinder.
  • Page 62: Chain Looper

    14. ADJUSTING GUIDE FOR JET- AIR THREADING (EXCEPT BLE1SX) NOTE: In case that adjusting JET AIR THREADING, do not lay down the machine body on the side. ) In case that the joint pipes do not move smoothly. UPPER LOOPER or LOWER LOOPER Loosen the screw "A"...
  • Page 63 14. ADJUSTING GUIDE FOR JET- AIR THREADING (EXCEPT BLE1SX) NOTE: In case that adjusting JET AIR THREADING, do not lay down the machine body on the side. ) In case that the end of joint pipe is not in the center of joint pipe receiver. 1) Adjustment of upward and downward direction Check and confirm whether upper, lower and chain looper are in the standard position (See P.
  • Page 64 15. REPLACEMENT GUIDE FOR JET- AIR THREADING (EXCEPT BLE1SX) a) Replacement of Upper looper threading pipe and Joint pipe. 1) Loosen the fixing screw of Pipe holder, and remove Pipe holder(1) and (2). 2) Loosen 2 fixing screws of Threader selector plate. 3) Slightly lift Threader selector plate upward and remove Upper looper threading pipe downward and rightward.
  • Page 65 16. REPLACEMENT OF ROLLERS OF A.T.D. 1) Loosen the screw (1) and remove Frontdisk moving arm set. 2) Remove Rear disk moving arm set. 3) Loosen the screw (2) and replace Cam.The screw should be placed at the flat of shaft. 4) Replace Rear disk moving arm set.
  • Page 66 17. REPLACEMENT OF LOOPER DRIVING CAM AND ROLLER To replace Before remove the cams on the main shaft, you are required to check the distance of gap between rightside of right bush and left side of handwheel (A). 1) Remove Spool stand set, Bace plate, Side cover, Face cover, Knife holder cover and Knife cover set. 2) Loosen all screws of Timing pully (1), Machine engage plate set(2), Balancer (5), Lower looper driving cam (7), Chain looper driving cam (8), Feed dog driving cam (9) and Knife driving cam (10) on the main shaft.
  • Page 67 17. REPLACEMENT OF LOOPER DRIVING CAM AND ROLLER To reassemble 1) To easy reassemble, machine should be turned 90 degrees to left side. 2) Reassemble Chain looper driving cam (8), Lower looper driving cam (7),Needle driving rod set(6), Balancer (5), Upper looper driving cam (4), Spring(3) and Machine engage plate set(2). 3) Replace the main shaft with Timing pully (1).
  • Page 68 For Knife driving cam For Feed dog driving cam For Lower looper driving cam Main shaft 0.2mm 12mm For BLE8, BLE8W, BLCS For BLE1SX, BLE1, BLE1DX, BLE1LX, BLE1AT, BLE3ATW...
  • Page 69 18. Adjusting Gauge...

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