11) Draw out the axis 4 timing belt upward, then set a new belt.
12) Secure the ball screw nut and ball screw spline shaft which were disconnected
in Step 10) above, and nut flange to the arm 2, using the four (4) bolts (M5 ×
16). At first, tighten the bolts temporarily. Move the shaft up and down by
hand and make sure that it moves smoothly, then tighten the bolts completely.
* A phase mark is provided on both the ball screw spline shaft and ball spline
nut. For details, see Step 5) of Para. 2.7.5.
13) Attach the axis 3 nut pulley to the ball screw nut with the four (4) bolts (M6 ×
20).
STE 85306
– 50 –
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