Maintenance 8. Replacing the Timing Belts (U2 Belt)
E2C Rev.6
159
8.5 Replacing the U2 Belt
A brake is mounted on the motor of Joint #4 to prevent the shaft from moving down and
rotating due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
Note that the brake will not work during the replacement procedure.
Move the shaft down to its lower limit before starting the replacement procedure by
following the instructions below:
Removal
(1) Remove the arm top cover.
For details on the removal method, refer to
Maintenance: 3.1 Arm Top Cover
.
(2) Cut off the wire tie binding the duct plate,
motor, and cables together.
(3) Remove the duct plate.
Duct plate
3-M5
×
1
5
(4) Cut off the wire tie binding the motor cables to the Joint #3 motor.
(5) Disconnect the connectors X131, X31, and X32.
To disconnect the X131 connector, pull it out while pushing the projection next to the
connector.
(6) Remove the Joint #3 motor unit from Arm
#2.
To do so, unscrew the bolts from the Joint
#3 motor plate. Then, remove the Z belt
from the pulley and pull the Joint #3 motor
unit upward to remove it.
Pulley
Z belt
4-M4
×
1
2
+Washer,
Spring washer
Motor plate
Joint #3 motor unit
)
NOTE
Summary of Contents for E2C Series
Page 1: ...SCARA ROBOT E2C series MANIPULATOR MANUAL Rev 6 EM069R1409F ...
Page 2: ...MANIPULATOR MANUAL E2C series Rev 6 ...
Page 8: ...vi E2C Rev 6 ...
Page 14: ......
Page 82: ......
Page 92: ...Maintenance 2 General Maintenance 80 E2C Rev 6 ...
Page 118: ...Maintenance 4 Replacing the Cable Unit 106 E2C Rev 6 ...
Page 194: ...Maintenance 11 Replacing the Signal Relay Board 182 E2C Rev 6 ...