Epson LS20-B Series

Maintenance 8. Joint #4
L
S20-B Rev.4 143
Joint #4
Reduction Gear
Unit
Installation
(1)
Mount
the plate on a new reduction gear unit.
4-M4×20
Plain Washer
Plate
Joint #4
Reduction Gear Unit
(2)
M
ount the U pulley and the U housing.
4-M4×10
U Housing
Joint #4
Reduction Gear Unit
U Pulley
6-M4×15
(3)
Mount the Joint #4 motor
unit on the reduction
gear
unit.
Insert the extension shaft to the reduction gear
unit.
After
inserting the extension shaft, loosely
secure the motor plate on
the Joint #4 motor
unit with
bolts (M3×12), and loosen the motor
fixing
bolts
(M4×70) to secure the motor
loosely.
At this point, make sure that the motor unit can
be moved by hand, and it will not tilt when
pulled.
3-M3×12
+ Plain Washer
Joint #4 Motor
Hole for fixing the
extension shaft
Joint #4
Reduction Gear Unit
Before fixing it to the reduction gear unit, make sure to rotate Joint #4 reduction unit
two or three times from the output side.
Remove the cover of the hole for fixing the
extension shaft, and then tighten the bolts
to fix
the extension shaft on the reduction gear unit.
After fixing the shaft, mount the cover of the hole for fixing the
extension shaft.
(4)
T
ighten the bolts on the loosely secured motor plate and the motor to fix Joint #4
motor unit
on the reduction gear unit.
(
5)
Mount the Joint #4 motor unit to the Arm #2.
F
or details, refer to Maintenance 8.2 Replacing the Timing Belt.

NOTE