Epson LS10-B, User Manual

Page: 137 / 180

Maintenance 8. Joint #4
LS10-B Rev.6 125
(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) .
(7) Mount the Joint #4 motor unit on the
Arm #2 with the U1 belt around the
pulley.
3-M4×15
＋
Washer
Joint #4
Motor Unit
U1 belt
Pulley
(8) Loosely secure the Joint #4 motor unit
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.
(9) Apply the proper tension to the U1 belt and secure the Joint #4 motor 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)
3-M4
×
15
+
Washer
Force Gauge
Joint #4
Motor Unit
To check belt tension with the tension meter, refer to
Maintenance: 8.4 Checking the
Timing Belt Tension (U1, U2 Belts) .

NOTE

NOTE