Epson G20 Series

Maintenance 10. Ball Screw Spline Unit
200 G10 / G20 Rev.20
(10)
Remove the Joint #4 motor unit from Arm #2.
Unscrew the bolts securing the Joint #4 motor unit
to the motor plate. Remove the U belt from the
U1 pulley. Pull the Joint #4 motor unit upward to
remove.
4-M4×15
+ Washer
Joint #4
motor unit
(11)
Remove the brake hub.
Loosen the two set screws and pull out the brake
hub.
2-M3×4
set screw
Brake hub
(12)
Remove the brake.
There is a wave washer between the housing and
the bearing. Be careful not to lose it.
4-M4×12
Brake
Wave washer
Bearing
(13)
Remove the U belt.
3-M5×15
U belt
(14)
Remove the Joint #4 intermediate pulley.
Remove the shaft from the bearing and remove the
intermediate pulley from the lower side of Arm #2.
Intermediate
pulley
Bearing
Shaft
(15)
Remove the nut mounting screws of the ball screw
spline shaft on the lower part of Arm #2.
4-M5×15
(16)
Pull out the ball screw spline unit from Arm #2.