C8 Maintenance    9. Joint #5 
 
368  C Series Maintenance Manual Rev.2 
7.  Loosen the screws fixing the Joint #5 motor unit and remove 
the belt. 
Hexagon socket head cap bolts:   
2-M4×15 (with a plain washer) 
 
 
8.  Remove the Joint #5 motor unit. 
Hexagon socket head cap bolts:   
2-M4×15 (with a plain washer) 
 
9.  Remove the Joint #5 pulley 1 and the drive boss from the 
motor shaft of the Joint #5 motor unit. 
Pulley 1 and drive boss screws 
Hexagon socket set screws: 2-M4×4 (with a brass bushing) 
Drive boss and motor shaft screws 
Hexagon socket set screws: 2-M4×4 
 
There is a brass bushing on one of the set screws fixing the 
drive boss and the pulley. Be careful not to lose it. 
A: Pulley and motor shaft screws 
B:  Pulley and drive boss screws 
C:  Bushing 
 
Pulley 
Drive boss 
A 
A 
C 
B