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 2 

    

3

ADJUSTING THE THREAD TRIMMER AIR CYLINDER   

3333----1 Air cylinder stroke

1 Air cylinder stroke

1 Air cylinder stroke

1 Air cylinder stroke    

The stroke of the air cylinder should be 
approximately 15mm.  Adjustment is made 
by loosening collar B and screw A.  There 
should be a clearance of 15mm between rubber 
cushion F and the rear end of the cylinder. 
Position joint shaft E so that the distance from 
left end of the cylinder mounting bracket D to 
the center of joint shaft E is approximately 
55.3mm when the cylinder retracts. 
Adjustment is made by loosening nut C.    In these conditions, there should be a clearance 
of approximately 19mm between thread releaser block H and cylinder mounting bracket 
D. 

 

3333----2 Air cylinder return spring

2 Air cylinder return spring

2 Air cylinder return spring

2 Air cylinder return spring    

There should be a clearance of approximately 28mm 
between ring G and air cylinder mounting bracket D 
when the plunger of the air cylinder protrudes. 

 
 
 
 
 

4

ADJUSTING THE THREAD TRIMMER SOLENOID   

4444----1 Solenoid stroke

1 Solenoid stroke

1 Solenoid stroke

1 Solenoid stroke    

The stroke of the solenoid should be 
approximately 15mm.  Adjustment is made 
by removing rubber cover F and loosening 
screw A. 
There should be a clearance of 15mm between 
rubber cushion B and the rear end of the 
solenoid.  Position joint shaft E so that the 
distance from the left end of solenoid 
mounting bracket D to the center of joint shaft 
E is approximately 55.3mm when the solenoid 
has retracts.    Adjustment is made by loosening nut C.    In these conditions, there should 
be a clearance of approximately 19mm between thread releaser block J and solenoid 
mounting bracket D. 

 

4444----2 Adjusting the solenoid return spring

2 Adjusting the solenoid return spring

2 Adjusting the solenoid return spring

2 Adjusting the solenoid return spring 
There should be a clearance of 42mm between solenoid 
return spring collar H and solenoid mounting bracket 
D when the plunger of the solenoid protrudes. 
Adjustment is made by loosening screw G on solenoid 
return spring collar H. 

 
 
 

 

 

 

 

Summary of Contents for WX8803/UTC

Page 1: ...CTION INSTRUCTION WX LX UTC MANUAL Industrial Industrial Industrial Industrial Sewing Sewing Sewing Sewing Machines Machines Machines Machines First published August 1997 Fourth edition August 2000 No...

Page 2: ...ial s WX UTC Series Read and study this instruction manual carefully before beginning any of the procedures and save it for later use This instruction manual describes adjustments and maintenance proc...

Page 3: ...DJUSTING THE THREAD RELEASER 6 1 Thread releaser block 6 6 2 Thread releaser connection plate 6 6 3 Thread releaser lever 6 6 4 Looper thread take up 7 6 5 Thread releaser plate 7 6 6 Thread releaser...

Page 4: ...aced at position A for the next sewing operation after the threads are cut 2 INSTALLING THE POSITION DETECTOR Install position detector A and tighten screw B temporarily Fit positioner bar C onto the...

Page 5: ...en the plunger of the air cylinder protrudes 4 ADJUSTING THE THREAD TRIMMER SOLENOID 4 4 4 4 1 Solenoid stroke 1 Solenoid stroke 1 Solenoid stroke 1 Solenoid stroke The stroke of the solenoid should b...

Page 6: ...e that the looper thread clamp spring is simultaneously loosened 5 5 5 5 2 Adjusting the looper thread clamp spring 2 Adjusting the looper thread clamp spring 2 Adjusting the looper thread clamp sprin...

Page 7: ...me right end or left end of its travel The left side is a standard position for the mark N of guide lever ring R Adjustment is made by loosening the screw B of connecting lever E and moving guide bar...

Page 8: ...ead etween the movable knife needle thread and looper thread After all the adjustments are made check the following before threading to start the machine Movable knife A should enter needle thread loo...

Page 9: ...leaser connection plate 2 Thread releaser connection plate 2 Thread releaser connection plate 2 Thread releaser connection plate Fit thread releaser connection plate A onto guide screw E with a cleara...

Page 10: ...dition the length of spring H should be approximately 4mm 6 6 6 6 6 Thread releaser hook 6 Thread releaser hook 6 Thread releaser hook 6 Thread releaser hook The needle thread should not be shown long...

Page 11: ...ill retract too fast and then a looper thread may not be held properly 8 8 8 8 2 Air pressure 2 Air pressure 2 Air pressure 2 Air pressure Set the regulator at 4 5kg cm2 An air pressure of more than 5...

Page 12: ...r foot lift When the cylinder gets actuated the presser foot should be 6mm or 7mm above the top surface of the needle plate Position stopper E so that lever G cannot be lowered below stopper E Then se...

Page 13: ...by referring to 11 6 11 11 11 11 2 Adjusting the top cover thread clamp spring 2 Adjusting the top cover thread clamp spring 2 Adjusting the top cover thread clamp spring 2 Adjusting the top cover th...

Page 14: ...clearance of approximately 1mm between hook point D of movable knife C and the top cover thread Adjustment is made by loosening screws J on movable knife mounting base I 11 11 11 11 6 Adjusting the h...

Page 15: ...the pressure move up bracket D To decrease the pressure move down bracket D The pressure of spring F should be as light as possible yet be sufficient to return the movable knife home correctly when t...

Page 16: ...EUMATIC DEVICES Connect air lines and cords by referring to the illustration below and the parts list 13 WIRING AND PIPING FOR ELECTRIC DEVICES Connect air lines and cords by referring to the illustra...

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