Position Of Balance Weights And Cams; Projecting Amount Of Upper Looper - JUKI MO-104D Service Manual

10. Position of balance weights and cams

1 Feed cam
2 Lower looper and upper knife combined cam
3 Upper looper cam
4 Needle bar driving cam
5 Main shaft
6 1st setscrew
7 1st setscrew
5 1

11. Projecting amount of upper looper

[Checking items]
1 Upper looper
2 Needle
* Check that distance (projecting amount) from the center of nee-
dle 2 to the blade point of upper looper 1 is 4.0 ± 0.2 mm A
when the upper looper 1 is in its leftmost position.
[How to perform adjustment]
○ Set the upper looper 1 in its leftmost position B .
○ Loosen the setscrew C of the upper looper arm.
○ Move the upper looper siding shaft D to perform adjustment.
○ Tighten the setscrew C of the upper looper arm.
2 3
7
– 9 –
4
6
A
1
2
B
C
D