Epson LS20-B Series Manual page 145

U belt (1) Hold up the spline plate and set the U belt
Installation
(2) Hold up the spline plate and set the Z belt around the Z pulley.
(3) Loosely secure the spline plate on the Arm #2 and
NOTE

(4) Loosely secure the Joint #3 motor unit to the Arm
NOTE

(5) Apply the proper tension to the Z belt, and then secure the Joint #3 motor unit.
(6) Loosely secure the Joint #4 motor unit to the Arm
NOTE

LS20-B Rev.4
around the pulley.
Make sure the gear grooves of the belt are fit
into those of the pulleys completely.
Make sure the teeth of the timing belt are engaged with those of the pulley.
move the shaft up and down several times before
firmly secure the spline plate.
Loosely tighten the screws so that the spline plate
can be moved by hand. Fix the spline plate with
the screws while pushing the front side of the Arm
#2 and the right side face.
#2.
Make sure the teeth of the timing belt are engaged
with those of the pulley.
At this point, make sure that the Joint #3 motor unit can be moved by hand, and it
will not tilt when pulled. If the unit is tilted, the belt will not have the proper tension.
For details, refer to Maintenance: 7.2 Replacing the Timing Belt.
#2.
Make sure the teeth of the timing belt are engaged
with those of the pulley.
Make sure that the Joint #4 motor unit can be
moved by hand, and it will not tilt when pulled.
If the unit is tilted, the belt will not have the proper tension.
Maintenance 8. Joint #4
3-M4×15
Spline Plate
Z Belt
U Belt
Faces to push
the spline plate
Joint #3
Motor Unit
3-M5×20
+washer for
slotted hole
Joint #4
Motor Unit
3-M5×20
+ washer for slotted hole
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