Related Manuals for JUKI MCS-1500
Summary of Contents for JUKI MCS-1500
- Page 1 3-Needle, 2/3/4-Thread Cover Stitch Sewing Machine MCS-1500 SERVICE MANUAL No.00 40178060...
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Page 2: Table Of Contents
CONTENTS Specifications ......................1 1. Installation of the throat plate ................1 2. Height of the needle bar ..................2 3. Position of the feed dog ..................2 4. Height of the feed dog ................... 3 5. Feed dog timing ..................... 4 6. Position of the balance weights and cams ............4 7. Radius of the double-chain looper ............... 5 8. Adjustment of the double-chain looper and the needles ........5 9. Installation of the needle guards ................7 10. Position of the double-chain looper thread take-up ........8 11. Position of the double-chain looper thread take-up guide ......9 12. Position of the tension release mechanism of the tension controller .. -
Page 3: Specifications
Specifications Items Description No of needle and threads 3-needles 4-threads, 2-needles 3-threads (for covering) 1-needle 2-threads (for double-chain) Needle 130/705H #80 (#70 - #90) Overedge width 5.0 mm (for covering) Stitch length 1.0 - 4.0 mm Differential feed ratio Stretching: 1 : 0.7 Shirring: 1 : 1 - 1 : 2 Needle bar stroke 27 mm Feed dog height... -
Page 4: Height Of The Needle Bar
2. Height of the needle bar 2.1. Checking items: 1 Left hand needle 2 Throat plate - Check that the distance between the throat plate surface and the left hand needle point with the needle bar at the highest point of its stroke is 11.4 mm (A) when using needle system 130/705H. -
Page 5: Height Of The Feed Dog
3.2. How to perform adjustment: - Loosen the setscrews (D) of the sub feed dog. - At the most advanced position in max. main feed and min. sub feed move the sub feed dog back and forth and perform adjust- ment so that the clearance between the main feed dog and the sub feed dog is to be 1.0 mm (B). -
Page 6: Feed Dog Timing
5. Feed dog timing 5.1. Checking items: Left hand needle Throat plate Feed dog - Check that the needle point of the left hand needle and the teeth points of the feed dog are at the same time flush with the surface of the throat plate when feed dog and the needle are in their upward stroke at stitch length 2.5. -
Page 7: Radius Of The Double-Chain Looper
7. Radius of the double-chain looper 7.1. Checking items: Double-chain lopper Setscrew of double-chain looper (15.5 mm) Throat plate - To the right-most position of the double-chain looper. Check that the distance between double-chain looper blade point and the throat plate top surface is 15.1 mm (A). - Page 8 8.2. How to perform adjustment: How to adjust the distance and clearance between the dou- ble-chain looper blade point and the needle. - Loosen the setscrews (C) of the double-chain looper support arm. - Move the double-chain looper support arm (D) back or forth, left or right to make adjustment. - Retighten the setscrews (C). 8.3. How to perform adjustment: How to adjust the meeting timing of the double-chain looper and the needle. - Loosen the setscrews (F) of the lower looper cam (E).
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Page 9: Installation Of The Needle Guards
9. Installation of the needle guards 9.1. Checking item: Front needle guard Rear needle guard Setscrew Needle 130/705H size 80 Setscrew - Check that the clearance (A) of 0.05 - 0.1 mm is provided between the needle and the rear needle guard. - Check that the clearance (B) of 0 ± 0.15 mm is provided between the needle and the front needle guard. -
Page 10: Position Of The Double-Chain Looper Thread Take-Up
10. Position of the double-chain looper thread take-up 10.1. Checking items: Double-chain looper thread take-up Double-chain looper thread take-up guide Setscrew of double-chain looper thread take-up Setscrew of double-chain looper thread take-up guide - Check that the flat part of the double-chain looper thread take-up is in its vertical position, when the needle bar is position (A). -
Page 11: Position Of The Double-Chain Looper Thread Take-Up Guide
11. Position of the double-chain looper thread take-up guide 11.1. Checking items: 37 mm (A) Double-chain looper thread take-up Double-chain looper thread take-up guide Double-chain looper thread take-up base plate Setscrews of double-chain looper thread take-up base plate Shaft - Check that the distance from the shaft to the flat side of the double-chain looper thread take-up is 37 mm (A), when the flat side of the double-chain looper thread take-... -
Page 12: Position Of The Tension Release Mechanism Of The Tension Controller
12. Position of the tension release mechanism of the tension controller 12.1. Checking items: 1 Tension release actuating plate 2 Support shaft 3 Setscrew 4 Cam hole for the support shaft - Check, if the tensions are released, when: ・ the presser foot is lifted ・ the tension dials are set on No.4 A clearance of 0.4 - 0.8 mm should appear between the tension discs. -
Page 13: Height And Lateral Position Of The Presser Foot
13. Height and lateral position of the presser foot 13.1. Checking item: Throat plate Chain stitch presser foot - Raise the presser foot using the lifting lever and check that the distance between the throat plate surface and the presser foot sole is 8 (+0/-0.6) mm (A). - Check that the presser foot is parallel to the feed dog slot in the throat plate. -
Page 14: Thread Tension Controls
14. Thread tension controls 14.1. Checking item: - Using a No.120 polyester spun thread (saba120c), check that sewing results are good with tension settings between 3 and 5 (A) this by sewing a cover stitch formation. - Check the specified tension values by using the tension gauge and a No.120 polyester spun thread (saba120c white color). -
Page 15: Positioning The Thread Take-Up Spring
15. Positioning the thread take-up spring - Left needle tension (A) - Center needle tension (B) - Right needle tension (C) Position 4 Position 4 2 - 2.5 mm 5 - 5.5 mm Position 6 0 mm – 13 –... - Page 16 2-11-1, TSURUMAKI, TAMA-SHI, TOKYO, 206-8551, JAPAN PHONE : (81)42-357-2341 http://www.juki.com ＊ The description covered in this Service Manual is subject to change for im- Copyright © 2016 JUKI CORPORATION provement of the commodity without notice. • All rights reserved throughout the world. 000416...