C4 Maintenance  5. Joint #1 
 
72  C Series Maintenance Manual Rev.2 
5.4  Joint #1 - Replacing the Electromagnetic Brake 
 
 
Maintenance 
Parts 
Joint #1 electromagnetic brake 
1 
For the part code, refer to the 
17. C4 
Maintenance Part List. 
1 
Tools 
Hexagonal 
width across flats: 2.5 mm 
For M5 hexagon socket head set screw 
For M4 hexagon socket head cap bolt 
For belt tension adjustment 
 
Removal: Joint #1 Electromagnetic brake 
1.  Remove the Joint #1 electromagnetic brake from the Joint #1 motor unit. 
For details, refer to C4 Maintenance: 5.1 Joint #1 motor, Removal step (1) to (6). 
2.  Remove the following connector. 
 
Connector: D (for noise dissipative diode) 
 
Installation: Joint #1 Electromagnetic brake 
1. 
Install the following connector to the connector of the 
electromagnetic brake. 
 
Connector: D (for noise dissipative diode) 
 
2.  Mount the Joint #1 motor unit. 
For details, refer to C4 Maintenance: 5.1 Joint #1 motor, Installation step (2) to (9).