6. Replacing the Reduction Gear Units Part 2: Maintenance
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Installation : Joint #1
(1) A new reduction gear unit contains the parts shown below when it is unpacked.
However, the oil-sealing ring (L) will not be used here. The circular spline and fleck
spline (at the gear grooves) are greased as well as the waveform generator (at the
bearings). Wipe off excess grease from the mounting surface.
Waveform generator
Circular spline
Fleck spline
+Cross roller
bearing unit
Oil-sealing ring (L)
Oil-sealing ring (S) ×2
Never touch (to loosen or tighten) the bolts holding the fleck spline and cross roller bearing
unit together. If the bolts are moved, the fleck spline and cross roller bearing unit must be
readjusted at the suppliers since they are centered when attached together.
(2) Fit the oil-sealing rings (S) into the grooves on both sides of the new circular spline.
Be sure that the rings will not come out of the grooves.
Convex side
Grooves
The other side
NOTE
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