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[Procedure]
1) Move the slider from the home position toward the mechanical end and check the rotating direction of
the motor shaft. (If the actuator has its home located on the opposite side to the standard specification,
this check is always required because the motor shaft rotates in the different direction.)
• Remove the pulley case cover.
(Remove the three thin-head screws using an Allen wrench of 2.5 mm across flats.)
2) Loosen the four tension adjustment bolts to
slacken the belt.
(Allen wrench of 3 mm across flats)
3) Remove the belt from the pulleys.
3) Make the following adjustment to restore the home position:
• Move the slider to the mechanical end on the home side and keep it in contact with the mechanical
end.
• Turn the motor shaft by the specified amount from the countermark position toward the return-to-
mechanical-end direction (the direction checked at the beginning).
Type
Amount returned from the
countermark position
RA5R-16
67.5°
RA5R-8
135°
RA5R-4
230°
Check the rotating direction
of the motor shaft.