Epson C Series Maintenance Manual page 125

6. Cut off the wire tie binding the cables of the Joint #4 motor unit.
7. Remove the Joint #4 pulley 1 and the drive boss from the Joint
#4 motor unit.
The drive boss and the pulley fixing:
Hexagon socket set screws: 2-M3×8 (with a brass bushing)
The pulley and the motor shaft fixing:
Hexagon socket set screws: 2-M3×8 (with a brass bushing)
There is a brass bushing in one of the set screw fixing the drive boss and the pulley.
Be careful not to lose it.
Drive boss
C
B
E
8. Remove the Joint #4 electromagnetic brake.
Hexagon socket set screws: 3-M2.5×10
9. Remove the motor plate from the Joint #4 motor.
Hexagon socket head cap bolts: 2-M4×12
C Series Maintenance Manual Rev.2
Pulley
A : Pulley and motor shaft fixing screws
A
B : Pulley and drive boss fixing screws
D
A
C : Bushing
D : Flat face for motor shaft
E : Flat face for drive boss
C
B
Motor shaft
C4 Maintenance 8. Joint #4
105