U Belt (T3-B) - Epson T-B Series Maintenance Manual

12.2.3 U Belt (T3-B)

U belt (1) Remove the Joint #4 motor unit.
Removal
(2) Loosen the Joint #3 motor unit mounting
(3) Unscrew the spline plate mounting screws.
U belt
NOTE

Installation
(1) Hold up the spline plate and set a new U belt around the U2 pulley.
(2) Hold up the spline plate and set the Z belt around the Z2 pulley.
(3) Secure temporarily the spline plate on the Arm #2 and move the shaft up and down
(4) Mount the Joint #4 motor unit.
(5) Apply the proper tension to the Z belt, and secure the Joint #3 motor unit.
(6) Perform the calibration of Joints #3, #4.
T-B series Maintenance Manual Rev.1
Reference: 12.1 Replacing Joint #4 Motor "Joint #4 motor Removal"
bolt.
a: 2-M4×15+M4 slotted hole washer
b: M3×12+M3 slotted hole washer
3-M4×12
Holding the spline plate upward, pull out
the Z Belt and U belt.
For tightening hexagon socket head cap bolts, refer to "2.4
Socket Head Cap Bolts".
3-M4×12
Make sure the gear grooves of the belt are fit into those of the pulleys completely.
Make sure the gear grooves of the belt are fit into those of the pulleys completely.
several times before securing the spline plate.
Reference: 12.1 Replacing Joint #4 Motor "Joint #4 motor Installation"
Reference: 11.1 Replacing Joint #3 Motor "Joint #3 motor Installation"
Reference: 17. Calibration
T3-B T6-B Maintenance 12. Joint #4
T3-B
b
Joint #3
motor unit
a
U belt
Shaft
Z belt
Tightening Hexagon
Spline
plate
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