6. Replacing the Reduction Gear Units Part 2: Maintenance
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(10) Secure the motor flange with four bolts (M4×10 for the ES model; M4×15 for the EL
model) so that the motor cable will come to the position shown in the picture below.
Motor flange
ES: M4×10
EL: M4×15
(11) Secure Arm #2. Support the arm with more than one person. While the arm is being
supported, have another person fasten four bolts (M6×18 for the ES series; M8×18 for
the EL series) to attach Arm #2. Be careful not to drop or hit the arm.