Tools and Parts Required

• 5mm Hex Tool

• 3mm Hex Tool

• 2.5mm Hex Tool

• 2mm Hex Tool

• 19mm Wrench

• Pantheon Ball-screw Clamp

Open

Removing the Motor Mount

With the machine powered OFF:

• Unplug the connectors to the Y-axis servo motor.

Open

• Use a 2.5 mm hex bit to loosen the clamping screws of the coupler.

• With the coupler loose, remove the four bolts that hold the servo motor in place using a 3mm hex bit. For the bottom two bolts, use an extension that is longer than the servo motor.

• Once all four bolts are removed, gently remove the servo motor and the coupler. Place off to the side.

• Move the gantry by hand to the center of travel.

• Loosen the two grub-screws on the locknut of the ball-screw.

• Place the Pantheon Ball-screw Clamp tool over the smooth portion of the ball-screw end, ensure there is good contact (free of debris or oils) between the clamp and the ball-screw. Tighten the clamping bolt on the tool with a 5mm hex bit to 160in*lbs (18N*m).

• Place the 19mm wrench over the ball-screw locknut.

• Loosen the locknut by counter-rotating the 19mm wrench and the ball-screw clamping tool. You may need tighten the clamping bolt of the ball-screw clamping tool if the tool begins to slip on the shaft of the ball-screw.

• Once loose, remove the 19mm wrench and clamping tool. Then remove the locknut by hand.

• There are two collars on either side of the bearing within the motor mount that fit over the end of the ball-screw as shown below.

• Loosen the four M6 bolts using a 5mm hex bit that hold the motor mount in place.

• Loosen the two M6 bolts that hold the floating mount of the ball-screw at the opposite side of the ball-screw.

• Slowly slide the gantry so that the end of the ball-screw slides out of the motor mount. Be sure to collect the collars. The bearing at the other end of the ball-screw will slide out of the floating side as well. It is held in place with a circlip. There is no need to remove the bearing or circlip.

• Fully remove the four M6 bolts of the motor mount.

• Fully remove the motor mount.

Installing the Motor Mount

• Install the motor mount using the four M6 bolts. Tighten the bolts until they bottom out and then unscrew 1/4 turn or until the motor mount is free to slide.

• Place one collar over the end of the ball-screw as far as it will go.

• Slide the ball-screw fully through the motor mount, and the bearing on the other side of the ball-screw has slipped into the floating mount.

• Place the other collar over the end of the ball-screw at the motor mount such that there is a collar on either side of the bearing within the motor mount.

• Install and hand-tighten the locknut on the threads of the ball-screw.

• Be sure the gantry is in the center of travel.

• Place the Pantheon Ball-screw Clamp tool over the smooth portion of the ball-screw end, ensure there is good contact (free of debris or oils) between the clamp and the ball-screw. Tighten the clamping bolt on the tool with a 5mm hex bit to 160in*lbs (18N*m).

• Place the 19mm wrench over the ball-screw locknut.

• Tighten the locknut until the ball-screw clamp tool slips on the ball-screw. Then remove both tools.

• Tighten the two grub-screws of the locknut.

• Install the Coupler on the end of the ball-screw.

• Reinstall the Servo Motor, and plug the electrical connectors into the motor.

• Tighten the clamping bolts of the coupler to the servo motor and the ball-screw shaft.

• Power ON the machine.

• Navigate to the HOMING page on the screen.

• Press the Home Y routine.

• After the Home Y routine finishes, torque the four M6 bolts to 60in*lbs (7N*m) to secure the motor mount in place.

• Navigate to the ACTIONS page on the screen and disable all the motors.

• Move the gantry by hand away from the home position to the far end of travel.

• Torque the two M6 bolts of the floating ball-screw support to 60in*lbs (7N*m).

• The Y-axis motion system should now be fully secure.