In this lesson we’ll walk through replacing the Epilog Zing Y-Motor.
Shut off the laser and remove the power cord from the machine.

Remove Rear Panel
Loosen the two screws on the back of the machine and remove the back panel.
Remove Old Y-Motor
Using a 3mm hex key, loosen the four hex screws located on the drive couplers located on both sides of the Y-Motor.
Slide the drive couplers away from the Y-Motor.
On the left side of the chassis, remove the Y-Motor electrical connection.
Cut all three of the white cable ties.
On the right-side of the Y-Axis motor, using a long handled screwdriver, remove the four mounting screws.
Move the motor to the left far enough to clear the motor shaft and remove the motor.
Install New Y-Motor
Take your new Y-Motor and turn it so the harness is on top. Install from the left side of the opening.
Place the fan control board on the top two screws.
Tighten the four mounting screws.
If you would like, attach new zip ties to hold the cables together, then reconnect the electrical connection on the left side of the machine.
Slide the drive couplers back into place, keeping the couplers approximately 1/4 inch away from the motor to avoid grinding. To ensure proper alignment, have someone hold the assembly square to the back of the macine before tightening the couplers.
Tighten the four Allen screws.
Manually turn the couplers to make sure they are in sync, otherwise you will feel them slipping.
Reinstall Rear Panel
Replace the rear panel and tighten the two screws.
Plug the machine in and turn it on.