C4 Maintenance 6. Joint #2
76 C Series Maintenance Manual Rev.2
7. Remove the Joint #2 pulley 1 and the drive boss from the
motor shaft of the Joint #2 motor unit.
Drive boss and the pulley
Hexagon socket set screws: 2-M5×6 (with a brass bushing)
Pulley and the motor shaft
Hexagon socket set screws: 2-M5×10 (with a brass
bushing)
There is a brass bushing on one of the set screws fixing the driving boss and the pulley.
Be careful not to lose it.
8. Remove the Joint #2 electromagnetic brake.
Hexagon socket set screw: 1-M5×8
9. Remove the motor plate from the Joint #2 motor.
Hexagon socket head cap bolts: 4-M5×15
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