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7) While placing a steel rod or similar tool through the 8mm diameter hole at
the lower part of the spline, loosen the U-nut at the top of the spline with the
hook wrench, and remove the bearing and bearing mount plate.
(See Fig. 5-47.)
Use a round steel rod with a diameter slightly smaller than 8mm. Avoid
using a square rod because the spline might be damaged by the edge of the
rod.
At this time, be careful to keep the spline shaft from coming off the spline
nut.
8) Remove the bolts (M3×30L, 8 pieces) on the underside of the Y-axis arm
and remove the plate fastening the spline and the harmonic drive.
(See Fig. 5-48)
Fastening plate
Fig. 5-47
M3×30
Fig. 5-48
5-55
CHAPTER 5 Periodic Inspection
U-nut
Spline nut
Spline shaft
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