C4 Maintenance 5. Joint #1
60 C Series Maintenance Manual Rev.2
5. Remove the pulley 1 and the drive boss from the Joint #1 motor
unit.
Drive boss and the pulley:
Hexagon socket head set screws: 2-M5×6 (with a brass bushing)
Pulley and the motor shaft:
Hexagon socket head set screws: 2-M5×10 (with a brass bushing)
There is a brass bushing on one of the set screws fixing the drive
boss and the pulley 1. Be careful not to lose it.
6. Remove the electromagnetic brake of the Joint #1.
Hexagon socket head set screw: 1-M5×8
7. Remove the motor plate from the Joint #1 motor.
Hexagon socket head cap bolts: 4-M5×15
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