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1. Replacement of upper feed roller
(1) Loosen the setscrews and remove the front gear cover .
(2) Loosen the setscrews and remove the rear gear cover .
(3) Loosen two setscrews ( and ) and pull out the roller shaft
from the upper feed roller frame in the left direction. Then, the
upper feed roller can be dislodged.
(Caution) Pull it out with the key groove of the roller shaft
positioned just above.
When the key groove is positioned just under, the
key falls down.
(4) Insert the replacing upper feed roller in between the right and left
feed roller support arms of the upper feed roller frame . Then,
insert the roller shaft in the right direction from the left direction of
the feed roller support arm (left).
(Caution) Adjust the key position, attached with the roller shaft
, to the key groove hole of the horizontal drive gear
, and insert it.
(5) Apply the right side of the horizontal drive gear to the left side of
the feed roller support arm (left). Then, apply the left side of the
upper feed roller to the right side of the feed roller support arm
(left). Tighten the setscrew after confirming that there is no rattling
on the right and left and light revolution seems to be secured. Tighten
the remaining setscrew .
(Caution) The upper feed roller screws ( and ) are positioned
on the right as seen from the front. In regard to the screw
contact face of the roller shaft , the screw keeps a
rear contact in conjunction with the revolving direction.
(6) Mount the rear gear cover , and tighten the setscrews .
(7) Mount the front gear cover , and tighten the setscrews .
2. Installation of vertical drive gear
(1) Insert the vertical drive gear in the mounting hole of the upper
feed roller frame . Then, install the collar and tighten the
setscrew so that the vertical drive gear is free from vertical
rattling.
(2) Mount the roller connector on the shaft section of the vertical
drive gear and adjust it to the contact face of the shaft section.
Tighten the setscrew and also the remaining setscrew .
(Caution) When replacing the vertical drive gear , remove the
horizontal drive gear in the first place.
o The upper feed roller should
be selected according to the type
of material cloth. Otherwise, the
material cloth may get roller-borne
flaws.
Adjustment Procedures Results of Improper Adjustment
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