C8 Maintenance    9. Joint #5 
 
C Series Maintenance Manual Rev.2  367 
Removal: Joint #5 Motor 
1.  Turn OFF the Controller power. 
2.  Remove the Arm #4 side cover. 
For details, refer to C8 Maintenance: 3. Covers. 
3. 
Loosen the screws fixing the cable protection bracket on the Arm 
#4 and pull out the cables. 
Hexagon socket head cap bolts: 2-M4×10 
 
4.  Remove the brake 
power supply connected to the connector 
(BR052) from the plate. 
Cross recessed head screw with captive washer: 2-M3×6 
 
5.  Disconnect the following connectors. 
Connector: X052, X152, BT52, BR052 
 
6. 
Remove the air tube fitting located in the front of the Joint #5 
motor unit.