JUKI LBH-1700, Engineer'S Manual

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1) Replacing and assembling procedure of the parts
1. Connect work clamp 60 asm.
3
or work clamp 70 asm.
4
and the presser with presser installing plate spring
setscrews
5
.
2. Remove the needle and the cloth cutting knife from the sewing machine.
3. Remove the presser roller installing base setscrew.
4. Remove the needle thread trimmer support setscrews and remove the needle thread trimmer support.
5. Loosen work clamp shaft setscrew and pull out the work clamp shaft.
6. Remove the work clamp asm.
7. Loosen the work clamp bracket setscrew and remove the presser roller installing base from the work clamp
asm.
8. Remove the work clamp carrier setscrew and remove the work clamp carrier.
9. Remove the throat plate setscrews and remove the throat plate.
10. Temporarily tighten throat plate 2B
6
with throat plate setscrews
7
.
11. Assemble the needle and the cloth cutting knife, position throat plate 2B
6
properly, and fix throat plate
setscrews
7
. When the position of the throat plate is improper, refer to the item (10) Knife drop position on
page 10.
12. Remove the needle and the cloth cutting knife.
13. Set work clamp carrier spacer
9
to the rear side of work clamp carrier 70
8
so that the holes of them overlap
each other as shown in the figure, and fix them with work clamp carrier setscrew
!0
.
14. Attach the work clamp carrier to the sewing machine.
15. Loosen the work clamp bracket setscrew and attach the presser roller installing base to work clamp 60 asm.
3
or work clamp 70 asm.
4
. Then fix the work clamp bracket setscrew.
16. Attach work clamp 60 asm.
3
or work clamp 70 asm.
4
which has been connected to the sewing machine.
17. Enter the work clamp shaft and fix the work clamp shaft setscrew.
18. Attach the needle thread trimmer support with the needle thread trimmer support setscrews.
19. Attach the presser roller installing base with the presser roller installing base setscrew.
20. Attach the needle and the cloth cutting knife to the sewing machine.
21. Adjust the needle thread trimmer properly. Refer to the items (20) Lateral position of the needle thread
trimmer, (23) Opening timing of the needle thread trimmer and (25) Adjusting the needle thread trimmer
lever on pages 24 to 29.
22. Adjust the vertical position of work clamp bracket so that there is no lateral play in the work clamp when the
presser is lifted.
23. Use timing gauge B
!1
for hook adjusting since the throat plate is changed.
2) Setting the memory switch
1. Pressing the READY key and the CLAMP key, turn ON the power.
2. Set the memory switch No. 11 with the left “ + ” or “ – ” key and set the presser type to 5 with the right “ + ” or
“ – ” key. Refer to the item 5) Kind of presser setting on page 64.
3. Set the memory switch No. 21 with the left “ + ” or “ – ” key and set the cloth cutting knife length to be used with the
right “ + ” or “ – ” key. Use the knife size of 31.8 mm (1 1/4”) or less. When using the knife size of 17 mm or less,
the maximum length is limited. Refer to the item 12) Cloth cutting knife plural action setting on page 67.
4. Set the memory switch No. 22 with the left “ + ” or “ – ” key and set the cloth cutting knife plural action to “1” with
the right “ + ” or “ – ” key. Refer to the item 12) Cloth cutting knife plural action setting on page 67.
5. Set the memory switch No. 37 with the left “ + ” or “ – ” key and set the presser size width to “5” with the right
“ + ” or “ – ” key. Refer to the item 5) Kind of presser setting on page 64.
6. Set the memory switch No. 38 with the left “ + ” or “ – ” key and set the length of presser size to 60 or 70
according to the length of presser with the right “ + ” or “ – ” key. Refer to the item 5) Kind of presser setting
on page 64.
7. Turn OFF the power.
8. Set the sewing length and start sewing.