M2.5 Allen Key
M3.0 Allen Key
Wet Wipes or Tissues
Before replacing the pulley, make sure to turn off the printer and disconnect the power source for safety.
①Move the heated bed to the Y-axis motor location.
②Counter-clockwise rotate the red knob on the Y-axis belt tensioner and remove it for later removal of the belt copper buckle.
③Use an Allen Key or other tools to move the belt copper buckle on the rear of the heated bed to the right.
④Disconnect the Y-axis motor cable and use an M3.0 Allen Key to remove the two screws holding the Y-axis motor. Place the Y-axis motor aside for later installation.
⑤Use an M2.5 Allen Key to remove one screw that secures the heated bed's R-type wire clamp. This will prevent the bed from getting stuck when sliding it out.
⑥Slowly slide out the heated bed from the direction of the Y-axis motor. Remove the copper buckle at the front by hand. Note that due to its length, a part of the copper buckle on the other end may be inside the Y-axis aluminum profile. Use an Allen Key or other tools to extract the copper buckle from the Y-axis aluminum profile.
Use an open-end wrench to secure the nut, and then use an M3.0 Allen Key to counter-clockwise rotate and remove the four pillar screws securing the pulley.
Use wet wipes or tissues to wipe off any dirt or dust caused by wear on the Y-axis aluminum profile. This will avoid any interference when the heated bed is in motion.
①Take out the new pulley. Refer to the image and assemble the previously disassembled pillar screws and the pulley separately.
②First, place the removed nut and washer under the sheet metal by hand. Then align the assembled pulley with the holes. Please note that the adjustable hexagonal eccentric bushing should be installed individually at the larger hole in the heated bed's sheet metal. Before securing the screws with nuts, add a washer.
③Use an open-end wrench to secure the nut, and then use an M3.0 Allen Key to clockwise rotate and tighten the screws one by one.
①Install the copper buckle in the direction of the Y-axis belt tensioner onto the sheet metal in front of the heated bed. Then slide the heated bed from the Y-axis motor direction into position.
②Take the previously removed Y-axis motor, align it with the screw holes on the Y-axis aluminum profile, and use an M3.0 Allen Key to tighten the two screws to secure it.
③Move the heated bed to the back, use an Allen Key or other tools to move the belt copper buckle to the left, securing it to the heated bed's sheet metal. Note that during installation, the belt should pass around the Y-axis motor synchronous pulley.
④Place the heated bed's wire into the R-type wire clamp and use an M2.5 Allen Key to tighten the screw securing the wire clamp.
Take the red knob removed from the Y-axis belt tensioner earlier. Clockwise rotate the red knob on the Y-axis belt tensioner to make it as tight as possible, then turn it counter-clockwise one full turn.
After replacing the Y-axis pulley, you need to reperform the auto-leveling. If the print head presses too hard on the heated bed, or the gap is too large, manually compensate for the Z-axis offset.
If the above steps do not provide assistance or if you encounter any other issues during subsequent use, we recommend that you create a support ticket. The after-sales engineers will assist you in finding a solution to the problem(Reply time :1 working day)
Please click this link to submit your ticket: