Adjusting The Position Of The York Slide - JUKI AMB-289/IP-420 Instruction Manual

(2) Adjusting the position of the york slide

1
2
1
5
Blade tip of looper
Fig. 1
Approx. 6mm
3
4
6
Locus of york slide
Ⅰ–19
1) The position of york slide 1 has been factory-
assembled so that the clearance between
york slide 1 and the needle is longitudinally
0.2 to 0.4 and laterally 0 to 0.2 mm when the
needle bar comes to the lowest position.
(Refer to Fig. 1.)
2) Adjust the lateral position of york slide 1 by
loosening setscrews 2 and moving york slide
1 laterally.
3) Adjust the longitudinal position of york slide
1 by loosening setscrew 3 and moving york
slide cam 4 longitudinally. The motion timing
of york slide cam 4 at this time is adjusted
by making the engraved marker line on york
slide cam 4 directly below and tightening the
cam with setscrew 3 when the needle bar is
at the lowest position.
4) Timing of the york slide motion is performed
in the order that the york slide moves from
the left to the right and starts retracting
immediately after the blade tip of looper has
passed the triangle of the thread.
(Position where the needle bar goes up
approximately 6 mm from the lowest position)
5) Loosen setscrews 6 in york slide triangle
cam 5 and turn the cam in the direction of
rotation to perform this adjustment.
Marks made by the electron pen have
been put on york slide cam 4 and
york slide triangle cam 5 at the time
of delivery from factory. Make them as
the standard of timing adjustment.
6) For the locus of york slide motion, loosen
setscrew 3 in york slide cam 4 and turn
the cam in the direction of rotation to adjust
so that the locus becomes a triangle while
keeping the clearance (0 to 0.2 mm) between
the needle and the york slide when the
needle goes up.