5-30
CHAPTER 5 Periodic Inspection
7) Remove the bolts (M6×20L, 4 pieces) securing the bearing to the upper end
of the spline and remove the bearing mount plate. (See Fig. 5-19.)
M6×20
Bearing
Holder
Spline support shaft
Fig. 5-19
8) While holding a steel rod or similar tool through the 10mm diameter hole
as shown, use the hook spanner to remove the U-nut on the spline shaft and
then remove the bearing. (See Fig. 5-20.)
Use a round steel rod with a diameter slightly smaller than 10mm. Avoid
using a square rod because the spline might be damaged by the edge of the
rod.
Be careful at this point to keep the spline shaft from coming off the spline.
Fig. 5-20
WARNING
THE Z-AXIS WILL SLIDE DOWN WHEN THE U-NUT IS REMOVED IN
THE NEXT STEP, CAUSING A HAZARDOUS SITUATION. PROP THE
Z-AXIS WITH A SUPPORT STAND BEFORE LOOSING THE U-NUT.
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