¶ XY timing belt
¶ Tools and materials needed
1x H1.5 hex key
1x H2.0 hex key
1x Slotted screwdriver （Or Flat tweezers）
1x Needle nose pliers
Screws list
| NO. | Model | Position | Drawing | NO. | Model | Position | Drawing |
| Screw A | BT3*6 | Metal side panels |
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Screw B | ST3*4.5 | Metal side panels, rear panel |
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| Screw C | M3*3 | Glass door |
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Screw D | BT3*5 | Rear panel |
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| Screw E | MG3*12 |
Aux parts cooling fan |
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Screw F | BT3*8 | Tension spring holder |
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| Screw G | M3*6 |
XY tensioner, Extruder |
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Screw H | BT2*5 | Tool head housing, PCBs |
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| Screw I | MG2.5*13 | Cutter lever |
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Screw J | BT2*8 | The timing belt, Y slider cover plate. |
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¶ Safety Warning
IMPORTANT!
It's crucial to power off the printer before performing any maintenance work on the printer and its electronics, including tool head wires, because leaving the printer on while conducting such tasks can cause a short circuit, which can lead to additional electronic damage and safety hazards.
When you perform maintenane or troubleshooting on the printer, you may be required to disassemble some parts, including the hotend. This process can expose wires and electrical components that could potentially short circuit if they come into contact with each other or with other metal or electronic components while the printer is still on. This can damage the electronics of the printer and cause further damage.
Therefore, it's essential to switch off the printer and disconnect it from the power source before doing any maintenance work. This will prevent any short circuits or damage to the printer's electronics. By doing so, you can avoid potential damage to the printer's electronic components and ensure that the maintenance work is performed safely and effectively.
If you have any concerns or questions about following this guide, open a new ticket in our Support Page and we will do our best to respond promptly and provide you with the assistance you need.
¶ Guide Video
Note: When installing, do not lock the screws at the two tensioning pulleys first, because a calibration for tensioning the belts is required.
¶ Operation Guide
¶ Disassembly
Note: The disassembly and assembly steps of the two XY timing belts are similar.
¶ Step 1 - Loosen the tensioner
To replace the belt, loosen the XY tensioner at the appropriate position by following the relevant instructions in the following guide XY tensioner idler.
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¶ Step 2 - Remove tool head housing
Refer to this wiki guide The housing of toolhead to remove the toolhead housing.
¶ Step 3 - Unlock the belt
To remove the belt, first, use a flathead screwdriver or flat-tipped tweezers to remove the screw that locks the belt in place. Then, use a prying motion to lift the stopper out of the belt. After the stopper has been removed, apply force in the direction that the belt is loosened to release it from the tool head as shown in the image below. Repeat these steps to loosen the other end of the belt.
¶ Step 4 - Remove the belt
To remove the belt from the idlers and motor pulley, gently pull on the belt until it is completely detached from them.
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¶ Step 5 - Remove the tensioner
Remove the tensioner from the belt.
(Similar steps to remove the other belt)
¶ Assembly
¶ Step 1 - Put through the belt
To reinstall the belt, first, place the tensioner onto the belt. Then, feed the belt through the components in the order shown in the images below. You may find it helpful to use tools like tweezers to guide the belt into position.
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¶ Step 2 - Locking the belt
To install the belt, bend the belt and insert it into the slot. Then, push the belt upwards (or downwards) to position it correctly. Use the hex key to press the timing belt stopper into place fully and secure it with a screw. Repeat these steps to lock the other end of the belt.
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¶ Step 3 - Install the toolhead housing
Refer to The housing of toolhead to install the toolhead housing.
¶ Step 4 - Install XY tensioner
Refer to the relevant content of XY tensioner idler , install the loose tensioner, and re-tension the belt.
¶ Calibration step after the operation
After replacing the carbon rods, the belts need to be re-tensioned.
- IMPORTANT: Power OFF the printer first.
- Loosen the 4 screws of the belt-tensioner (but DO NOT remove them), then gently move the toolhead back and forth several times, and finally move it to the rear end of the printer. Then, tighten the 4 screws again. The spring system in the belt-tensioner will tighten the belt to the correct tension.
- IMPORTANT: DO NOT overtighten the belt tensioning screws. Doing that can cause damage and will not provide better results. Simply tighten both screws like any other screws and don't over-torque them.
¶ Verify the functionality
Power on the printer and run the device self-test process. If the self-test passes, the operation is successful.
Should you come across any issues, first retrace your steps and check all connections to try again. If problems persist, contact the service team for further assistance.
¶ End Notes
We hope that the detailed guide we shared with you was helpful and informative.
We want to ensure that you can perform it safely and effectively. If you have any concerns or questions regarding the process described in this article, we encourage you to reach out to our friendly customer service team before starting the operation. Our team is always ready to help you and answer any questions you may have.
Click here to open a new ticket in our Support Page.
We will do our best to respond promptly and provide you with the assistance you need.