Epson LS20-B Series Manual page 140

Maintenance 8. Joint #4
(3) Insert the extension shaft to the reduction
NOTE

(4) Tighten the bolts on the loosely secured
(5) Mount the cover of the hole for fixing the extension shaft.
(6) Connect the following connectors.
(7) Mount the User Plate and the Duct Plate.
(8) Install the clip band removed in the removal
(9) Mount the Arm Top Cover.
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gear unit.
Make sure that Joint #4 motor cable is
sideways when looking from the front side
of Arm #2.
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.
Before fixing it to the reduction gear unit,
make sure to rotate Joint #4 reduction unit
two or three times from the output side by
turning shaft or belt.
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.
motor plate and the motor to fix Joint #4
motor unit on the reduction gear unit.
Connectors: BR4, X241, X41
For details, refer to Maintenance 3. Covers.
step (5), bind the cables, and then fix them.
Do not bend or pull the cables forcibly to allow
unnecessary strain on the cables.
For details, refer to Maintenance: 3.1 Arm Top Cover.
3-M3×12
2-M4×70
+Plain Washer
Hole for fixing the
extension shaft
Joint #4
Reduction Gear Unit
Duct Plate
Clip Band
LS20-B Rev.4
Joint #4
Motor Unit