Disassembling/Assembling Of The Loop Supply Belt Components - JUKI MOL-254 Engineer's Manual

5) Disassembling/assembling of the loop supply belt components

1. Protrude the installing position of the follower sprocket shaft by 5 to 6 mm from the bearing on this
side.
5. Proper tension of the supply belt : The belt should sag 4.6 mm when the center of the belt is
pressed with a load of approximately 40N (400gf).
(Caution) Be sure to measure the tension when the fixing screw is tightened since the tension
changes when the fixing screw in the supply motor installing plate is tightened or
loosened.
6. Length of engagement of the supply motor and the driving gear should protrude by 3.4 mm±0.2
mm from the motor shaft.
7. Adjust the backlash amount between the driving gear and the follower gear to 0.08 to 0.12 mm in
the full gears.
(Caution) If the backlash is smaller than the specified value, an abnormal noise will occur
from the gears.
If the backlash is excessively large, the supply position will vary resulting in defective
sewing.
Standard Structure
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