C4 Maintenance 7. Joint #3
C Series Maintenance Manual Rev.2 91
5. Disconnect the following connectors.
Connector: X131, X031, BT3, BR031
(Hold the clip to remove.)
6. Remove the Joint #3 motor unit and the belt from the Arm #2.
Hexagon socket head cap bolts: 2-M4×15
(with a plain washer)
7. Remove the connector for the noise dissipative diode.
Connector: D
The noise dissipative diode will be used again.
Be careful not to lose it.
8. Remove the Joint #3 pulley 1 from the Joint #3 motor unit.
Hexagon socket set screws: 2-M4×8 (with a brass bushing)
There is a brass bushing in one of the set screw fixing the
drive boss and the pulley. Be careful not to lose it.
9. Remove the motor plate from the Joint #3 motor.
Hexagon socket head cap bolt: 2-M4×12
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