Janome DE 5024 Servicing Manual
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Janome DE 5024 Servicing Manual

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SERVICING MANUAL
DE 5024

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  • Page 1 SERVICING MANUAL DE 5024...

  • Page 2: Table Of Contents

    CONTENTS WHAT TO DO WHEN 1 to 3 ..................SERVICE ACCESS FACE COVER ..................... 4 TOP COVER ....................4 BELT COVER ....................5 BASE ......................6 BED COVER ....................6 FRONT COVER ................... 7 MECHANICAL ADJUSTMENT TOP TENSION..................... 8 PRESSER BAR HEIGHT AND ALIGNMENT ..........9 STRAIGHT STITCHING ................

  • Page 3: What To Do When

    WHAT TO DO WHEN CONDITION CAUSE HOW TO FIX REFERENCE 1. SKIPPING 1. NEEDLE IS NOT INSERTED INSERT THE NEEDLE PROPERLY. STITCHES PROPERLY. 2. NEEDLE IS BENT OR WORN. CHANGE THE NEEDLE. 3. INCORRECTLY THREADED. RETHREAD. 4. NEEDLE OR THREAD ARE USE THE RECOMMENDED INAPPROPRIATE FOR SEWING NEEDLE AND THREAD.
  • Page 4 CONDITION CAUSE HOW TO FIX REFERENCE 3. BREAKING 1. INITIAL SEWING SPEED IS START WITH MEDIUM SPEED. UPPER TOO FAST. THREAD 2. THREAD PATH IS USE THE PROPER THREAD INCORRECT. PATH. 3. NEEDLE IS BENT OR DULL. REPLACE WITH A NEW NEEDLE. 4.
  • Page 5 CONDITION CAUSE HOW TO FIX REFERENCE 6. NOISY 1. BACKLASH BETWEEN SEE MECHANICAL P.15 OPERATION ROTARY HOOK GEAR AND ADJUSTMENT "NEEDLE LOWER SHAFT GEAR IS TOO CLEARANCE TO ROTARY HOOK". GREAT. 2. TOO MUCH UPPER SHAFT PLAY REDUCE THE UPPER SHAFT PLAY 3.

  • Page 6: Service Access

    SERVICE ACCESS FACE COVER 1. Open the face cover (A). 2. Remove the screws (B). 3. Take the face cover (A) off. TOP COVER (TO REMOVE) 1. Remove screws (C) and (D). 2. Raise the carrying handle (E), lift the top cover (F), and separate the carrying handle stays (G) from each pin (H) by pushing them from both sides.

  • Page 7: Belt Cover

    SERVICE ACCESS BELT COVER (TO REMOVE) 1. Remove the top cover (See page 4). 2. Loosen the screws (A) and (B) from the front cover.

  • Page 8: Base

    SERVICE ACCESS BASE 1. Remove 4 screws (A). 2. Remove the base (B). BED COVER 1. Remove 2 screws (D). 2. Remove the bed cover (E). * When you replace the bed cover, set the drop lever (F) in the left position.

  • Page 9: Front Cover

    SERVICE ACCESS FRONT COVER (TO REMOVE) 1. Remove the top cover, belt cover and base (See pageS 4, 5 and 6). 2. Set the pattern selector dial at stitch No. 18 (Triple lock straight stitch). When you turn the pattern selector dial, you can see the position of screw (D). 3.

  • Page 10: Top Tension

    SERVICE ACCESS TOP TENSION TO CHECK: When polyester sewing thread size 50 (white) is passed as shown in the figure below and pulled upwards (A), the tension should be 75 to 90 g with the thread tension dial set at “3”. ADJUSTMENT PROCEDURE: 1.

  • Page 11: Presser Bar Height And Alignment

    MECHANICAL ADJUSTMENT PRESSER BAR HEIGHT AND ALIGNMENT TO CHECK: 1. Raise the presser foot lever (B). 2. The distance between the zigzag foot (A) and the needle plate (C) should be 6.0 If this is not the case, adjust as follows. ADJUSTMENT PROCEDURE: 1.

  • Page 12: Straight Stitching

    MECHANICAL ADJUSTMENT STRAIGHT STITCHING TO CHECK: 1. Set the stitch width dial at “0” and the stitch selector at stitch No. 3 (Simple zigzag). 2. Turn the hand wheel by hand. 3. The needle should not swing side to side at this setting. ADJUSTMENT PROCEDURE: 1.

  • Page 13: Needle Swing

    MECHANICAL ADJUSTMENT NEEDLE SWING TO CHECK: If the needle bar moves sidewise while the needle is in the fabric in zigzag stitching (The needle should start swinging when 2 to 3mm above the needle plate in right outflow), adjust as follows: ADJUSTMENT PROCEDURE: 1.

  • Page 14: Needle Position

    MECHANICAL ADJUSTMENT NEEDLE POSITION TO CHECK: 1. Set the machine as follows: * Stitch selector at stitch No. 7 * Stitch width control at 6.5 2. Turn the hand wheel toward you until the needle comes to center position (D). 3.

  • Page 15: Distribution Of Needle Swing

    MECHANICAL ADJUSTMENT DISTRIBUTION OF NEEDLE SWING TO CHECK: 1. Set the stitch width control to “0 “and the stitch selector at stitch No. 3 (simple zigzag). 2. Raise the needle to its highest position. 3. Place the darning plate on the needle plate. 4.

  • Page 16: Zigzag Stopper

    MECHANICAL ADJUSTMENT ZIGZAG STOPPER If the needle tip hits with the needle plate (D) when the needle swings to the right at the maximum zigzag width, adjust as follows. (when the needle drop position in the needle plate hole deviates toward the right of the hole, refer to “DISTRIBUTION OF NEEDLE SWING”.) 1.

  • Page 17: Needle Clearance To Rotary Hook

    MECHANICAL ADJUSTMENT NEEDLE CLEARANCE TO ROTARY HOOK TO CHECK: 1. Set the stitch selector at stitch No. 3 (simple zigzag) 2. Remove the set screw (A) of the needle plate, and detach the needle plate (B) and bobbin holder (C). 3.

  • Page 18: Backlash (Lower Shaft Gear)

    MECHANICAL ADJUSTMENT BACKLASH (LOWER SHAFT GEAR) TO CHECK: 1. Remove screw (A) to remove the needle plate (B) and bobbin holder (C). 2. Turn the hand wheel slowly toward you until the tip of the rotary hook (D) comes within the width of the feed dog (E). 3.

  • Page 19: Needle Bar Height

    MECHANICAL ADJUSTMENT NEEDLE BAR HEIGHT When the tip of the rotary hook exactly meets the right of the needle (E) in ascending travel of the needle bar from its lowest position at the left needle drop position with the pa1tern selector dial at stitch No.

  • Page 20: Needle To Rotary Hook Timing

    MECHANICAL ADJUSTMENT NEEDLE TO ROTARY HOOK TIMING With the needle bar swing to the left at the maximum zigzag width, the amount of ascending travel of the needle bar from its lower position (H) to the position where the tip of the rotary hook (F) exactly meets the right side of the needle should be 3.15 to 3.45mm (G).

  • Page 21: Feed Dog Height

    MECHANICAL ADJUSTMENT FEED DOG HEIGHT When the presser foot (D) is lowered with the pressure dial set (I) at ” 3, “the highest position of the feed dog (E) should be 0.75 to 0.85mm above the top surface (F) of the needle plate. 1.

  • Page 22: Stretch Stitch Balance

    MECHANICAL ADJUSTMENT STRETCH STITCH BALANCE When the stitch No. 18 is sewed with the stretch stitch adjusting knob (E) at the setting mark (F), the stitch should be formed as shown in the figure below (A=B). If forward feeding and backward feeding is not balanced, make adjustment in the following procedure.

  • Page 23: Buttonhole Stitch Balance

    MECHANICAL ADJUSTMENT BUTTONHOLE STITCH BALANCE TO CHECK: 1. Set the machine as follows: Stitch selector at “BH” Stitch length dial at “blue zone” Stitch width dial at 6.5 2. Attach the automatic buttonhole foot (R). 3. Sew a buttonhole and check the stitch balance between the right side and left side of buttonhole.

  • Page 24: Zero Feeding

    MECHANICAL ADJUSTMENT ZERO FEEDING TO CHECK: 1. Select pattern No. 1 (straight stitch), and set the stitch length control (D) at “0”. 2. Place a piece of paper on the needle plate. 3. Check if the paper moves forward or backward when you turn the hand wheel toward you.

  • Page 25: Buttonhole Function (1)

    MECHANICAL ADJUSTMENT BUTTONHOLE FUNCTION (1) A buttonhole sewn with the automatic buttonhole foot will be 3mm longer than the actual button. The length can be adjusted as follows: ADJUSTMENT PROCEDURE: 1. Lower the feed dog and attach foot (R), then lower the presser bar. 2.

  • Page 26: Buttonhole Function (2)

    MECHANICAL ADJUSTMENT BUTTONHOLE FUNCTION (2) If the bar tack on the buttonhole is sewn too early (F), or if bar tack is sewn too late (G), adjust as follows: ADJUSTMENT PROCEDURE: 1. Remove the belt cover (See page 5). 2. Loosen set screw (A). 3.

  • Page 27: Motor Belt Tension

    MECHANICAL ADJUSTMENT MOTOR BELT TENSION TO CHECK: 1. If the motor belt tension is too tight or too loose, it may cause belt noise. Also, a too tight belt tension can cause the machine to run slow and will overload the motor.

  • Page 28: Part Removal And Replacement

    PART REMOVAL AND REPLACEMENT THREADER PLATE When the hook of the threader plate (F) is damaged, change or adjust the part as follows. TO CHANGE THE THREADER PLATE: 1. Raise the needle to its highest position, and lower the threader knob (D) to its lowest position.

  • Page 29: Wiring Of Machine Socket

    WIRING OF MACHINE SOCKET...

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