JUKI LH-4128-7, Руководство инженера

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o If the wiper is too long the
wiper will interface with the
needle clamp while the sewing
machine is no operation.
o If the wiper is not correctly
positioned the wiper will interfere
with the needle clamp while the
sewing machine is in operation.
o If the wiper is not correctly
positioned the wiper will come
in contact with the needle while
the wiper is in operation. (The
needle may breaks.
1. Loosen the screw and then tighten it in the position where a
clearance of 1.1
±
0.2mm is secured between the wiper base and
the presser bar metal .
2. Move the feed adjusting dial to MAX position.
3. Align the white engraved marker dot of the hand wheel to the en-
graved marker line of the pulley cover and move the wiper by hand.
Loosen the screw to adjust the wiper and tighten the screw
again when the clearance has been adjusted to 2 to 3mm while the
wire tip comes closest to the tip of the wiper .
4. Confirm that a clearance of more than 0.7mm is secured when the
pulley is turned and the wiper comes closest to the needle clamp.
If the clearance provided between
the plunger radial plate and the
reverse stitching solenoid is larger
than the specified value:
o The attraction of the magnet will
be decreased. In this case, the
machine fails to start reverse
feed stitching.
If there is no clearance provided
between the plunger radial plate
and the reverse stitching magnet:
o The stitch length for reverse feed
stitching ill be decreased.
1. Set the stitch dial to the max. value on the scale.
2. Loosen two screws in reverse feed solenoid mounting base .
3. Press the reverse feed control lever until it stops, and move the
plunger in the direction of the arrow. Adjust the clearance to 0.5 to
1mm between the rubber washer of the plunger and the side
surface of the reverse feed solenoid , and tighten the setscrew .
* This adjustment should be carried out after confirming that
adjustments have been finished as per (15) Initial position of the
reverse feed control lever.
Gage size Part No. Dimension
A
(inch) (mm)
3/22” to 3/8” 10209203 16
7/16” to 5/8” 10209500 24
3/4” to 7/8” 10209807 30
1” to 1 1/4” 10209906 37
A
Adjustment Procedure Results of Improper Adjustment
Adjustment Procedure Results of Improper Adjustment