JUKI AMB-289 Engineer's Manual page 51

Procedures of disassembling / assembling
Assembling of the needle throwing motor and the needle
bar rocking arm
(Caution) When needle throwing motor 6 is removed,
proceed to step 1. If not, proceed to step 6.
1. Install needle throwing motor 6 on installing base !2 with setscrews !4 .
2. Paying attention to the assembling direction, enter needle throwing
connecting shaft A @4 to needle throwing rod @6 and needle throwing
lever, rear 4, adjust it to the flat section, and tighten with setscrews @5 .
3. Paying attention to the assembling direction, enter needle throwing
connecting shaft A @4 to needle throwing rod @6 and needle throwing
motor drive arm !0 , adjust it to the flat section, and tighten setscrews @5 .
4. Paying attention to the assembling direction, enter needle throwing motor
drive arm !0 to the shaft of needle throwing motor 6, and temporarily
tighten screw !1 at the position where both planes of the top end of shaft
and needle throwing motor drive arm !0 align with each other.
5. Install needle throwing motor installing base !2 with setscrews !3 .
6. Entering needle bar rocking arm (asm.) @3 from the face plate section,
pass it through needle throwing lever, rear 4 and looper drive lever @8 .
(Caution) When needle throwing motor 6 is removed,
proceed to step 7. If not, proceed to step 9.
7. Loosen setscrew !1 in needle throwing motor drive arm !0 , make needle
throwing lever, rear 4 come in contact with metal @7 , and tighten
setscrew !1 in needle throwing motor drive arm !0 at the position where it
smoothly moves.
8. Temporarily tighten meedle throwing sensor installing plate 7 at the center
of the slot with setscrew 8.
9. Temporarily tighten needle bar square block base @1 with setscrews @2 .
10. Attach felt !9 together with needle bar cover !7 and washer @0 using
setscrew !8 .
11. Assemble the needle bar rocking base. "Refer to (3) Disassembling and
assembling of the needle bar rocking base and the needle bar crank rod."
12. Loosen setscrews @2 in needle bar square block base @1 , move the
needle bar up and down to check whether there is any torque. Then tighten
sertscrews @2 .
13. Attach needle, and align the needle with engraved marker line A on the
machine bed when the needle bar is in the lowest position (lateral
direction). "Refer to (13) Adjusting the tongue stopper." At this time, align
the bottom edge of needle throwing connecting shaft A @4 with the upper
side of the slot of motor installing base !2 . Then taking the lengthwise
thrust of needle bar rocking arm (asm.) @3 with needle throwing lever, rear
4, tighten setscrew 5 in needle throwing lever, rear 4.
14. Align the needle with engraved marker line A on the machine bed when
the needle bar is in the lowest position. "Refer to (13) Adjusting the tongue
stopper" (lateral direction). At this time,move looper rocking lever @8 to and
fro at the position where the bottom end of engraved marker line A on the
machine bed is aligned with the edge on the lower side of the slot of looper
rocking lever B !5 . Then tighten setscrew @9 at the position where the
looper rocking lever smoothly moves.
15. Make sure of the position of the needle and the yoke slide when the needle
bar is in the lowest position.
"Refer to (7) Disassembling and assembling of the looper rocking link and
the looper rocking shaft and (4) Adjusting the position of the yoke slide."
Caution in disassembling / assembling
™ Assemble so that the components
™ Needle throwing connecting shaft A @4
™ Assemble so that the components
™ Assemble so that the components
™ Assemble so that the components
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smoothly rock without looseness.
is the selective part. There are four
kinds from A to D. Select an adaptable
needle throwing connecting shaft from
among them for use.
smoothly rock without looseness.
smoothly rock without looseness. If the
adjustment is improper, the lateral
needle throwing fails to perform
symmetrically.
smoothly rock without looseness. If the
adjustment is improper, the lateral
looper throwing fails to perform
symmetrically.