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10.12) ADJUSTMENT OF TENSION OF EACH DRIVING BELT
10.12.1) Y-shaft Timing Belt
1) When checking the Y-shaft timing, locate the X-frame around the tail pulley and use the sound wave-
based belt tension meter.
2) Use a finger or a similar tool to strike the belt at the center of the belt and at the end of the X-Y
connection bracket. The measured tension values by the meter shall be as below.
3) Input data for sound wave-based belt tension meter to adjust the Y-shaft timing belt tension
Weight: 003.8gf/m
Wide: 015.0mm/#R
Span: 0510mm
4) When adjusting the Y-shaft timing belt tension, loosen the tightening screw for the tension base and turn
the tension adjusting bolt to adjust the tension.
When the bolt is turned clockwise, the belt tension gets stronger. Otherwise, the belt tension gets weaker.
X-Y Connecting Bracket
Tail Pulley
Tension Adjusting Screw
Specifications of Belt Tension Adjusting Device (sound wave-based belt tension meter)
- Model: U-305 series sound wave-based belt tension meter
- Manufacturer: UNITTA
CAUTION
1) The adjustment of the tension of each driving belt might affect the quality of embroidery
and the machine operation. Only Allow the SunStar service members who finished
certain training or equivalent experts to adjust the tension.
2) Make sure to turn off the power of the machine when adjusting the tension of each
driving belt.
CAUTION