C8 Maintenance    5. Joint #1 
 
292  C Series Maintenance Manual Rev.2 
5.1.4  Joint #1 - Replacing the Electromagnetic Brake   
  (M/C Cable Backward) 
Name  Qty.  Note 
Maintenance 
Parts 
Electromagnetic brake (Joint #1, 2) 
J1 brake positioning jig * 
Tools 
Hexagonal wrench   
(width across flats: 3 mm) 
1  For M4 hexagon socket head cap bolt 
Cross-point screwdriver (#2) 
For cross recessed head screws 
For tightening torque control 
* The belt tensile jig and J1 brake positioning jig are assembly jigs.    Use these jigs in relevant maintenance 
steps. 
The brake is mounted on each joint to prevent the arm from lowering due to its own weight while the Controller 
power is OFF or the motor is OFF status.    The brake does not work during replacement. Be careful when 
performing maintenance work.