Epson LS10-B Series User Manual page 142

Maintenance 8. Joint #4
(4) Loosely secure the Joint #4 motor unit to
(5) Apply the proper tension to the U1 belt,
NOTE

(6) Connect the connectors.
(7) Bind the cables with a wire tie in their original position as before removed in the
(8) Remove the User Plate.
(9) Install the Arm Top Cover.
130
Arm #2.
Make sure 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.
and then secure the Joint #4 intermediate
shaft unit.
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.
U1 axial tension (pulling force):
114 N (11.6 ± 0.5 kgf)
U1 belt tension
58 N (5.9 ± 0.5 kgf)
To check belt tension with the tension meter, refer to Maintenance: 8.4 Checking the
Timing Belt Tension (U1, U2 Belts).
Connectors: BR4, X241, X44
removal step (5).
For details, refer to Maintenance: 3.5 User Plate.
For details, refer to Maintenance: 3.1 Arm Top Cover.
Joint #4
Motor Unit
3-M4×12
+Washer
Joint #4
Motor Unit
Force
Gauge
3-M4×15
+ Washer
LS10-B Rev.6