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X and Y making loud grinding noises


dohblah
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I have a brand new Ender 5 Plus, I also purchased the silent motherboard upgrade. They both came in today and I put the printer together and swapped out the boards. When I try to home my axis both the X and Y make a loud grinding noise. Sometimes the X doesn't grind, the Y always does. Sometimes the Y won't move at all. See video below.

I've double checked all my connections, both to the motors and the board. I had read that sometimes there may be a bent pin on the connectors and checked all of those and they all were straight. I've also tried swapping the X and Y cables and it pretty much does the same thing. 

Please help!

Video:  https://photos.app.goo.gl/i5JgzBfZaygRVPeW9  


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kevin
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@dohblah You are not the only one who had this issue on Ender5 plus. Some of them caused by the screw for the lower eccentric guide wheels is too loose, please check and tighten them. 

The sound is from the mechanical movement is not smooth, instead of incorrect movement, I think.


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dohblah
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@kevin Thanks for your reply. I tried tightening it up, but I'm still having the same problem. 


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dohblah
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I also just tried putting the original motherboard back in to test that. Still have loud grinding noise. Also when I go to the movement screen and hit the down arrow sometimes it moves forward, sometimes it moves back. Same for the up arrow. The left and right on the X move properly though. 

Video: https://photos.app.goo.gl/4tLD95stXwdTM3xH8

So then I put the new silent motherboard back in and try using the movement keys. The X axis moves fine, but the Y will usually only move once or twice (still grinding) and then becomes completely unresponsive. 

Video: https://photos.app.goo.gl/ytDEJPHfNYdVjXke7


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kevin
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@dohblah I still think there is an issue with the guide wheels. Would you mind checking or reinstalling them? Maybe you can disassemble all the hot-end parts and belt to see if the X motor works properly when you click auto home, to verify my guess.


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dohblah
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@kevin I removed the belt on the X, still getting the grinding noise on the Y. See video below.

 

Video: https://photos.app.goo.gl/9niFctT7Z2sdFnUD7


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kevin
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@dohblah Thanks for your sharing! I mentioned that removed the belt to check if the sound comes from X/Y motors. Now obviously the sound did not come from the motor. It comes from Z/Y moving. 

I have some thoughts about this. The case frame requires more precision of the Aluminum profile than the gantry structure as any non-parallelism will cause anomalies.

I have attached a picture for my ender 5 plus. It has a little noise on Y moving before. I found the Y-axis track seems not parallel as there is a little abrasion indicated in red. The noise went away when I put some grease on wheels. Not only for wheel tracks, if the left and right belt are not balanced due to coupling screw loose may also cause noise.


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dohblah
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@kevin So I verified the eccentric nuts were tightened all the way up. The carriage moves stiffly, there's not play in the wheels at all. I greased them all as well. I also verified there was plenty of clearance space between the bottom of the wheels and the Z mounts, nothing seems to be rubbing or touching at all there.

Unfortunately I'm still getting the grinding noise on the Y axis. The belts seem straight and tight. 

Video: https://photos.app.goo.gl/MFBVQ9d4SNwwDVrz8

This post was modified 2 months ago by dohblah

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dohblah
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I unhooked the Y motor from the carriage and tried it and still get the grinding noise. So that's not coming from any moving part or rubbing on the chassis. 

 

Video: https://photos.app.goo.gl/tBw3KEgHhGF9NV8e7


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dohblah
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@kevin Definitely the Y motor. I pulled the Y motor off my regular Ender 5 and it runs smooth and quite. I know this motor is slightly smaller, will it damage anything or cause problems? Where can I get a replacement Y motor?


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kevin
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@dohblah Finally found where the noise comes from! Here you can buy a replacement Y motor for ender5 Plus. But is your printer new? You can go ask for customer service first, I think they should send you a new motor for free.

https://www.creality3dofficial.com/collections/7-for-ender-5-plus/products/original-replaced-accessories-for-ender-5-plus?variant=31109195038793


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