Table Of Contents - JUKI UT55 Instruction Manual

I. SPECIFICATIONS ...........................................................................................................1
II. AT THE BEGINNING......................................................................................................1
III. INSTALLING THE ACCESSORIES.............................................................................2
1. Installing the presser lifting cylinder ............................................................................................ 2
2. Installing the air regulator .............................................................................................................. 2
3. Installation and setting SC-921 ...................................................................................................... 3
(1) Installing the SC-921 on the table ( Table-mount type ) ............................................................................3
(2) Installing the SC-921 on the table ( Semi-submerged type ) ....................................................................3
(3) Connecting the cords ...................................................................................................................................4
(4) Setting procedure of the machine head .....................................................................................................5
(5) Setting the lower stop position of the needle bar .....................................................................................6
IV. AIR PIPING DRAWING.................................................................................................7
1. Piping of the thread trimmer device (UT57) .................................................................................. 7
2. Piping of the thread trimmer device (UT55) .................................................................................. 8
3. Piping drawing for air blow (UT56) ................................................................................................ 9
4. Adjusting the air regulator ............................................................................................................. 9
V. THREADING THE MACHINE HEAD ..........................................................................10
VI. ADJUSTING THE LOOPER THREAD TRIMMER MECHANISM ...........................11
1. Adjusting the thread trimmer air cylinder ....................................................................................11
2. Adjusting the Lower knife ............................................................................................................ 12
3. Adjusting the position of clamp pressure adjusting spring ..................................................... 12
4. Adjusting the knife engagement and the knife pressure adjusting spring ............................. 12
5. Adjusting the pressure of clamp spring ..................................................................................... 12
6. Initial position of the looper thread trimmer mechanism .......................................................... 13
7. Adjusting the stopper ................................................................................................................... 13
8. Adjusting the height of the lower knife ....................................................................................... 13
9. Adjusting the lower knife holder guide ....................................................................................... 13
10. Adjusting the longitudinal position of the blade point of lower knife ...................................... 14
11. Adjusting the thread trimmer sensor .......................................................................................... 14
12. Adjusting the speed of looper thread trimmer ........................................................................... 14
VII. ADJUSTING THE THREAD RELEASE MECHANISM ..........................................15
1. Adjusting the disk-rise ................................................................................................................. 15
2. Adjusting the thread release hook .............................................................................................. 15
VIII. ADJUSTING THE TOP COVERING THREAD TRIMMER MECHANISM ............16
1. Adjusting the engagement of knives .......................................................................................... 16
2. Adjusting the pressure of clamp spring ..................................................................................... 16
3. Adjusting the position of the blade point of moving knife ........................................................ 16
4. Adjusting the speed of moving knife .......................................................................................... 17
IX. ADJUSTING THE AIR-BLOW WIPER (UT56) .........................................................18
1. Installing the air-blow wiper ......................................................................................................... 18
2. Adjusting the air-blow wiper ........................................................................................................ 18
X. ADJUSTING THE NEEDLE THREAD WIPER (UT55) ..............................................19
1. Adjusting the clamp spring .......................................................................................................... 19
2. Installing the needle thread wiper ............................................................................................... 19
XI. MAINTENANCE ..........................................................................................................20
1. Cleaning the motor fan ................................................................................................................. 20
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