Epson LS20 Series Manipulator Manual page 134

Maintenance 8. Arm #4
(1) Hold up the spline plate and set the U belt
U belt
Installation
(2) Hold up the spline plate and set the Z belt
(3) Loosely secure the spline plate on the
NOTE

(4) Loosely secure the Joint #3 motor unit to
NOTE

(5) Apply the proper tension to the Z belt, and
122
around the U2 pulley.
Make sure the gear grooves of the belt are
fit into those of the pulleys completely.
around the Z2 pulley.
Make sure the teeth of the timing belt are
engaged with those of the pulley.
Arm #2 and move the shaft up and down
several times before firmly secure the
spline plate.
Fix the screws temporarily 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.
the Arm #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.
then secure the Joint #3 motor unit.
For details, refer to Maintenance: 7.2
Replacing the Timing Belt.
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 #3
Motor Unit
LS20 Rev.4