Epson LS10-B, User Manual

Page: 117 / 180

Maintenance 7. Joint #3
LS10-B Rev.6 105
Joint #3 motor
Installation (1) Mount the pulley to the Joint #3 motor.
Insert the pulley where its end face touches
the motor shaft end face and secure by set
screws.
Joint #3 Motor
Electromagnetic
brake
Pulley
Motor Plate
Tighten one of the set screws vertically on the flat face of the motor shaft.
Insert a bushing into the other set screw hole to prevent damage to the motor shaft.
(2) Mount the Joint #3 motor to the motor plate
while aligning the hub to the brake disc.
Before aligning the hub, set the motor so that
the pulley will be inside of the Z belt.
Secure the motor cables facing to back of the
Arm.
Joint #3 Motor
4-M4
×
15
+Washer
Z Belt
Motor plate
(3) Loosely secure the Joint #3 motor unit to the Arm #2. Make sure that the teeth of
the timing belt are engaged with those of the pulley.
At this point, make sure that the Joint #3 motor unit can be moved by hand, and it
will not tilt when pushed by tensioner. If the unit is secured too loose or too tight,
the belt will not have the proper tension
(4) Apply the proper tension to the Z belt, and
secure the Joint #3 motor unit.
Nut
Plate
Bolt
Tensioner
Install the tensioner in front of the Joint #3
motor unit. Rotate the hexagonal bolt of
the tensioner and push the plate to apply
the specified tension.
Z belt tension
69 N (7.0 ± 0.5 kgf)
(4)-1 Loosen the nut and turn the bolt. Push in the Joint #3 motor unit.
(4)-2 After fixing the Joint #3 motor unit, turn the bolt to leave from the plate.
(4)-3 Check the tension using the sonic tension meter.
For details, refer to Maintenance 7.4 Checking the Timing Belt Tension .
(4)-4 Repeat the steps (4)-1 through (4)-3 until you get appropriate tension.
(4)-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: 7.4 Checking the
Timing Belt Tension (Z Belt) .
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NOTE
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NOTE
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NOTE