Epson LS-B Series Maintenance Manual page 305

(9) Remove the Joint #3 motor from the motor
(10) Remove the screws for the spline plate.
LS-B series Maintenance Rev.1
plate and pull out the Z belt.
The belt is placed around the pulley. To
remove the Joint #3 motor, tilt the motor
slightly and pull it upward while avoiding
the belt.
Holding the spline plate upward, pull out the
Z belt.
LS20-B Maintenance 7. Joint #3
4-M4×15+
Plain washer
Joint #3 Motor
Motor Plate
3-M4×15
Z belt
Spline Plate
Z Belt
291