Adjusting The Wiper Mechanism; Adjusting The Chuck Open Mechanism - JUKI AMB-289/IP-420 Instruction Manual

(5) Adjusting the wiper mechanism

8
9
!0
2
6 to 8mm

(6) Adjusting the chuck open mechanism

3
2
7
5
3
1
4
6
3 to 5mm
1
1
1) Turn OFF the air, and draw wiper 1 until it
goes no further.
2) Adjust wiper cylinder installing bases A 3 .
and B 4 with the respective setscrews
5 and 6 so that the vertical clearance
between needle tip 2 and the top surface
of wiper 1 is 3 to 5 mm and the lateral
dimension between needle tip 2 and the
thread holding section of wiper 1 is 6 to
8 mm at the sewing machine stop position
(needle bar upper dead point).
3) Fix spring A 7 so that wiper 1 and spring A
7 equally come in contact with each other
on the plane within the range of the stroke
of cylinder 8 .
4) Adjust the holding force of thread with
spring B 9 ..
5) To adjust the holding force, loosen screw
!0 and adjust so that thread slips off with
the force of approximately 20 to 25g when
polyester spun thread #50 is held.
When the mode is changed over to the manual
button control mode, raise hook A 1 to decrease
the open amount. Adjust the open amount by
loosening screws 2 and sliding hook B 3 to the
right and left.
When the mode is changed over to
the button loader motion mode, do
not forget to release hook A 1 .
Ⅰ–22