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C. Adjusting the Tension of the Y-timing Belt
ⓐ Enter the data as below by using the sound wave tension meter (based on UNITTA U-505 ).
Weight : 4gf/m
Wide : 12mm/#R
Span : 155mm
ⓑ Disassemble the Y-motor base cover. Adjust the sound wave tension meter to show 7~8kgf as value when
striking the center of the pulley with fingers or similar tools.
ⓒ Loosen four fixing bolts for the pulley bracket and turn the tension adjusting bolt to adjust the tension
(clockwise → the tension increases, counter-clockwise → the tension decreases).
ⓓ When the tension adjustment is complete, fasten the fixing bolt for the pulley bracket to return to the original
state.
[ Fig. 90 ][ Fig. 89 ]