Grab one motor and insert the shaft into the coupler until it bottoms out. Securely fasten the M4 set screw on the motor-facing side of the coupler using the smaller 3mm hex key. Repeat this coupler assembly for the remaining two motors.
Cross sectional view of coupler and motor, indicating motor shaft bottoming out and motor-facing screw fully tightened
Tightening coupler screw at motor end
Slide one of the assembled motors onto the X-axis ball screw and install four (4) M5-10mm socket head screws into the left Y gantry plate and securely tighten. The motors should be oriented so that the DIP switches are facing down.
Securely fastening motor onto X-axis ball screw
Closeup showing motor orientation on X-axis
Tighten the coupler set screw at the ball screw end using the smaller 3mm hex wrench.
Tightening set screw at ball screw end of X coupler
Install the remaining two assembled motors onto the back of the Y end plates using the M5-10mm socket head crews. When looking at the motors head-on, the motors should be oriented so that the DIP switches are facing down.
Securely fastening motor onto Y-axis
For the remaining motors, tighten the coupler set screw at the ball screw end using the smaller 3mm hex wrench.
Tightening set screw at ball screw end of Y coupler
Now we will set the correct DIP switch positions for each motor. Make sure that the X and Y-axis motors are set as follows from 1-5: OFF, OFF, OFF, ON, ON
Correct motor DIP switches setting for X and Y-axis
Then set the Z-axis motor as follows from 1-5: OFF, OFF, ON, ON, ON
Correct motor DIP switches setting for Z-axis