JUKI MEB-3200 Engineer's Manual page 89

1. Assemble looper rotary timing belt 5 and assemble looper driving arm !4 . When inserting or drawing
out fulcrum shaft !1 , make thrust washer !8 come in contact with boss section !2 of the machine bed
and remove the play with thrust collar ! 7 . Cam roller @ 6 enters looper cam section @ 7 . When inserting
the forked section of looper driving arm !4 into looper driving shaft @2 , remove the play with thrust
washer @4 and bracket @3 . (Face the polished faces of thrust washers @1 and @2 to the sides of driving
arms !4 and !3 . )
2. Similarly, assemble spreader driving arm !3 . Cam roller @5 enters looper cam @7 .
3. Turn the looper bracket by hand and check the rotary torque of it. When the rotary load is large,
loosen once bracket @0 and bracket @3 , and remove again thrust (remove the play).
4. Assemble oil tank unit 7 and temporarily tighten rotary motor unit 4 while placing looper rotary
timing belt 5.
At this time, face the looper bracket and the needle bar to the front respectively and adjust the rotary
sensor slit of rotary motor unit 4 roughly on the sensor.
5. Adjust the tension of the belt according to "(28) Adjusting the tension of the looper rotary timing belt"
and fix rotary motor unit 4.
6. Assemble looper thread AT unit 2.
7. Adjust the position of the rotary sensor slit according to "(30) Adjusting the position of the looper
bracket".
8. Check whether the center of the needle is proper according to "(1) Adjusting the center of the needle".
Re-adjust the center when it is improper.
9. Make the rotary timing on the needle bar side correspond with that on the looper side according to
"(29) Adjusting the position of the needle bar rotary pulley".
10. Perform the adjustment such as "(5) Timing between the needle and the looper, (6) Clearance between
the needle and the looper, (8) Installation position of the spreaders and the timing to open/close the
spreaders, etc.".
@2
@4
!7
@4
@3
!5
!9
@1
@1
@0
Caution in assembling
!4
!8
9
!3
!6
85
− −
!2
!1
9
8
!1
!0