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JUKI TL Series User Manual

JUKI TL Series
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SERVICE MANUAL
TL series
1-NEEDLE LOCKSTITCH SEWING MACHINE WITH
AUTOMATIC THREAD TRIMMER FOR PROFESSIONAL
No.00
40175681
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JUKI TL Series Specifications

General IconGeneral
BrandJUKI
ModelTL Series
CategorySewing Machine
LanguageEnglish

Summary

Specifications

Power Switch

Details the ON-OFF 2-step changeover switch for the main unit.

Drive Control Components

Covers drive method and foot pedal controller specifications.

Table, Stand, and Handle Components

Describes the portable main unit, auxiliary table, and handle.

Arm and Bed Components

Specifies materials and form of the arm and bed.

General Mechanism

Lists key mechanisms like hook, thread take-up, and presser foot.

Feed Mechanism

Details feed amount adjustment and reverse feed stitch.

Special Mechanism

Explains automatic thread trimming and motor protection features.

Dimensions and Weight

Provides the physical dimensions and weight of the sewing machine.

Power Consumption

Lists power consumption details for different voltage settings.

Names of Components

Disassembly and Assembly

Outer Components Overview

Lists categories of external parts for disassembly and assembly.

Function Components Overview

Lists categories of internal functional parts for disassembly and assembly.

Automatic Thread Trimming Components Overview

Lists categories of parts related to the automatic thread trimmer for disassembly.

Arm Cover Assembly

Step-by-step guide for disassembling and assembling the arm cover.

Belt Cover and Motor Cover

Instructions for removing and refitting the belt and motor covers.

Face Plate Assembly

Procedure for disassembling and assembling the face plate.

Bed Cover Assembly

Steps for removing and installing the bed cover assembly.

Main Circuit Board Assembly

Guide for disassembling and assembling the main circuit board.

Motor and Transformer Assembly

Detailed steps for motor and transformer assembly/disassembly.

Handwheel and Clutch

Instructions for disassembling and assembling the handwheel and clutch mechanism.

Thread Tensioner Assembly

Procedure for removing, assembling, and adjusting the thread tensioner.

Presser Bar

Steps for disassembling and assembling the presser bar.

Needle Bar

Guide for needle bar disassembly, assembly, and positioning.

Thread Take-up

Instructions for disassembling and assembling the thread take-up mechanism.

Reverse Feed Stitch Lever

Procedure for removing and assembling the reverse feed stitch lever.

Idler

Steps for disassembling, assembling, and adjusting the idler.

Stitch Dial

Guide for disassembling, assembling, and adjusting the stitch dial.

Thread Trimming Switch Case

Instructions for removing and attaching the thread trimming switch case.

Wire Holder

Steps for disassembling and assembling the wire holder.

Knee Lifter Lever

Procedure for disassembling and assembling the knee lifter lever.

Hook Driving Shaft Pulley

Guide for disassembling, assembling, and timing the hook driving shaft pulley.

Hand Lifter Lever

Instructions for disassembling and assembling the hand lifter lever.

Drop-feed Knob

Procedure for disassembling and assembling the drop-feed knob.

Automatic Thread Trimming Components

Looper Mechanism Assembly

Steps for disassembling and assembling the looper mechanism.

Moving Knife Arm Installing Plate Assembly

Guide for installing the moving knife arm plate and related components.

Moving Knife Base Assembly

Procedure for disassembling and assembling the moving knife base.

Thread Trimmer Solenoid Assembly

Steps for disassembling and assembling the thread trimmer solenoid.

Adjusting the Counter Knife

Properly Installing the Knife Thread Guide

Instructions for correctly installing the knife thread guide.

Properly Installing the Counter Knife

Guide for correctly installing the counter knife and its blade.

Printed Circuit Board Diagram (Connector Layout)

Main Circuit Board

Diagram and connector layout for the main circuit board.

Filter Circuit Board

Diagram and connector layout for the filter circuit board.

Adjustment of Components

General Mechanism Adjustments

Covers adjustments for basic sewing machine functions like needle, feed, and hook.

Height of Needle Bar Bushing

Procedure to set the correct height for the needle bar bushing.

Height of Needle Bar

Instructions for adjusting the needle bar height at its lower dead point.

Height of Presser Foot

Steps to adjust the clearance between the presser foot and the throat plate.

Height of Feed Dog

Guide for setting the feed dog height and its alignment.

Feed Timing

Procedure to adjust the feed timing and clearances.

Needle-to-Hook Timing

Instructions for setting the correct timing between the needle and the hook.

Clearance Between Needle and Hook

Steps to adjust the clearance between the needle and the hook.

Position of Bobbin Case Positioning Finger

Guide for adjusting the bobbin case positioning finger's alignment and clearance.

Momentum of Thread Take-up Spring

Instructions for setting the thread take-up spring position for thread absorption.

Tension of Thread Take-up Spring

Procedure to adjust the tension of the thread take-up spring.

Adjustment of Bobbin Thread Tension

How to adjust the bobbin thread tension using the adjusting screw.

Position of Bobbin Winder Clutch

Steps to adjust the bobbin winder clutch for ON/OFF states.

Adjustment of Bobbin Winder

Covers disengaging position, micro switch, and bobbin thread winding amount.

Position of Threader Support Plate Assembly

Guide for adjusting the position of the threader support plate assembly.

Vertical Position of Threader Hook

Instructions for adjusting the vertical position of the threader hook.

Automatic Thread Trimmer Mechanism Adjustments

Details adjustments for the automatic thread trimmer system's components.

Positioning of Moving Knife Arm Installing Plate

Adjusts the moving knife arm plate for correct moving knife position.

Installing Position of Thread Trimmer Solenoid

Adjusts the thread trimmer solenoid position for proper cam interaction.

Thread Trimmer Cam Timing

Sets the timing for thread trimmer auxiliary cam, thread trimmer cam, and roller holding cam.

Positioning of Thread Trimmer Auxiliary Cam

Positions the thread trimmer auxiliary cam relative to the solenoid link.

Positioning of Thread Trimmer Cam

Positions the thread trimmer cam by setting its contactor shaft.

Positioning of Roller Holding Cam

Positions the roller holding cam to contact the concave portion.

Securely Tighten Setscrews in Respective Cams

Final tightening of setscrews for all positioned cams.

Adjustment of Eccentric Shaft of Thread Trimmer Solenoid Link A

Adjusts the eccentric shaft of the thread trimmer solenoid link.

Adjustment of Thread Trimmer Clutch Plate Collar

Adjusts the thread trimmer clutch plate collar for clearance.

Confirmation of Working and Positioning of Link Arm Fixing Plate

Confirms positioning and timing of various thread trimmer components.

Position and Protruding Amount of Looper

Adjusts looper position and moving amount for optimal performance.

Adjustment of Left/Right Position of Looper

Aligns the center of the inner hook with the center of the looper.

Adjustment of Moving Amount of Looper

Adjusts the clearance between the looper and the looper cam.

Installing Position of Looper Stopper Plate

Sets the looper stopper plate position for clearance.

Position of Nut of Wire Setscrew

Adjusts the thread tension disk open/close by setting the wire setscrew nut.