Epson LS10-B Series User Manual page 137

NOTE

(7) Mount the Joint #4 motor unit on the
(8) Loosely secure the Joint #4 motor unit
(9) Apply the proper tension to the U1 belt and secure the Joint #4 motor unit.
NOTE

LS10-B Rev.6
(6)-1 Loosen the nut and turn the bolt. Push in the Joint #3 motor unit.
(6)-2 After fixing the Joint #3 motor unit, turn the bolt to leave from the plate.
(6)-3 Check the tension using the sonic tension meter.
For details, refer to Maintenance 7.4 Checking the Timing Belt Tension.
(6)-4 Repeat the steps (6)-1 through (6)-3 until you get appropriate tension.
(6)-5 After the adjustment, put the bolt back to its original position and fix it with
the nut.
To check belt tension with the tension meter, refer to Maintenance: 8.4 Checking the
Timing Belt Tension (U1, U2 Belts).
Arm #2 with the U1 belt around the
pulley.
to the 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.
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).
Maintenance 8. Joint #4
Joint #4
Motor Unit
3-M4×15
＋Washer
Joint #4
Motor Unit
3-M4×15
+ Washer
Force Gauge
Pulley
U1 belt
125