Rev. 2.0
Maintenance Guide
5-3
5-3. Replacing the IN and OUT Motors
1) Disconnect the connector of the motor relay cable.
2) Loosen the screws fixing the motor bracket A to detach the drive belt from the motor pulley S.
3) Loosen the fixing screws d and detach the motor.
4) Make the end face of the motor shaft of a new motor aligned with the motor pulley S (A=0)
and tighten the fixing screw d.
5) Temporarily tighten the setscrews c and adjust the tension of the timing belt to 12N to 16N
by turning the setscrew e.
For this adjustment, use UNITTA’s acoustic belt tension meter (Weight = 2.5, Width = 6.0,
Span = 75).
6) After the belt tension has been adjusted, tighten the screws c to fix the motors to the rail
stand.
Fixin
screw d
Setscrew c
Motor pulley S
Motor bracket A
Setscrew e
Figure 5-3
Note) Belt (tension) is stretched excessively. → Torque of the drive shaft increases.
Note) Belt (tension) is loosened excessively. → Teeth on the timing pulley are skipped.
(Noise is produced.)
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