JUKI AMB-289, Руководство инженера

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Adjusting the position of the needle and the throat plate
1. Loosen screws
and adjust the throat plate so that the needle
enters the center of the needle hole.
Adjusting the clearance between the needle and the needle guide
1. Loosen screw
and adjust so that the clearance between needle
guide and the needle is 0 to 0.1 mm at the lowest position of the
needle bar.
(Caution) When the needle size is changed, perform readjustment.
1. Adjust the lateral position of needle and the looper shaft so that
the left side of needle aligns with section
A
of yoke slide .
2. The position of york slide has been factory-assembled so that the
clearance between york slide and the needle is longitudinally
0.2 to 0.4 mm and laterally 0 to 0.2 mm when the needle bar comes
to the lowest position. (Move the yoke slide
frontward to adjust the
clearance at the front and rear of the slide.)
3. Adjust the lateral position of yoke slide by loosening setscrew
and moving yoke slide support A to the right and left.
4. Adjust the longitudinal position of york slide by loosening setscrew
and moving york slide cam longitudinally. The motion timing of
york slide cam at this time is adjusted by making the engraved
marker line on york slide cam directly below and tightening the
cam with setscrew when the needle bar is at the lowest position.
5. Timing of the yoke slide motion is performed in the order that yoke
slide starts moving from point A to point B 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)
6. Loosen setscrews in york slide triangle cam and turn the cam in
the direction of rotation to perform this adjustment.
(Reference) There are electronic pen marks on the yoke slide cam
at factory shipment. Use the marks and the engraved
lines of the yoke slide triangle cam
to adjust timing.
7. Adjust the locus of york slide motion by loosening setscrew in york
slide cam and turning the cam in the direction of rotation so that
the locus becomes as shown in the figure.
(Caution) When the needle size is changed, perform re-adjustment.
o Stitch skipping, thread breakage,
or defective thread trimming
(trimming failure and two-thread
cutting) may be caused.
o Stitch skipping or thread breakage
will be caused.
Adjustment Procedure Results of Improper Adjustment
Adjustment Procedure Results of Improper Adjustment