Epson G Series Maintenance Manual page 451

NOTE

When tightening hexagon socket head cap bolts, refer to the 2.4 Tightening Hexagon Socket
Head Cap Bolts.
Joint #4 brake (1) Mount the brake.
Installation: G10
(2) Secure the brake hub with the two set screws.
(3) Loosely secure the Joint #4 motor unit to Arm #2.
NOTE

(4) When you use the plate of 3-point mounting,
NOTE

(5) Apply the proper tension to the U belt, and
(6) Connect the connectors X42.
(7) Re-bundle the cables in their original positions with a wire tie removed in step (6).
(8) Install the arm top cover.
G series Maintenance Rev.3
Loosely secure the Joint #4 motor unit to Arm #2
so that the motor unit can be moved by hand, and
it will not tilt when pulled. If the unit is secured
too loose or too tight, the belt will not have the
proper tension.
mount the plate with pressing it to the Joint #4
motor.
When mounting the battery unit, be sure to keep
the connectors connected to the battery unit.
If connectors of the battery unity are disconnected,
you need to perform calibration again.
When you use the plate of 4-point mounting, you
do not have to mount the plate.
then secure the Joint #4 motor unit.
To do so, pass a suitable cord or string around
the Joint #4 motor unit near its mounting
plate. Then, pull the cord using a force
gauge or similar tool to apply the specified
tension shown in the figure on the right.
Do not allow unnecessary strain on the cables.
For details, refer to 3.1 Arm Top Cover.
G10 G20 Maintenance 8. Joint #4
2-M2.5×20
Brake
2-M3×4
set screw
4-M4×15 + Washer
Joint #4
motor unit
3-point mounting
G10
Plate
G10 : U belt tension = 160 N (16.3 kgf)
Joint #4
motor unit
4-M4×15 + Washer
Brake hub
Battery unit
Force gauge
433