9. Remove the reduction gear unit from the Arm #2.
Hexagon socket head cap bolts (with plain washer):
12-M6×45
Wipe grease on the part while removing it.
10. Remove the O-ring from the groove on the Arm #2.
Wipe grease on the part while removing it.
C Series Maintenance Manual Rev.2
C12 Maintenance 6. Joint #2
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