IAI America FS - Manual (Page 58)

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4. Put a robust rope in a ring shape (or a long cable band) around the motor cover, and pull it on a
tension gauge.
While it is pulled up with the specified tensile force, tighten the screws at four points.
(Use a hexagon wrench with the distance to the opposite side of 4mm.)
(Pay attention to the slider and motor shaft so they would not move while in the work.)
Specified Tensile Force
NM 5kgf
WM 10kgf
Pull up with specified tensile force.