Loud Z Lead Screw when moving bed down

I was working on the printer and did some changes on the gantry to add ABS printed parts. I didn't touch the bed or make adjustments to the frame. The left Z lead screw became really noisy for some reason. When it moves down at a Section in the beginning it is really loud. There's no binding, I can easily rotate the motor by hand where it still makes the sound just not as loud.
2 Replies
ptegler
ptegler16mo ago
did you put the bearing under t hat screw to couple motor? grease it? grease that top coupler?
skyline131313
skyline131313OP16mo ago
yah it is under the coupler, the sound stops when you go lower down the lead screw. I didn't grease it, I thought you don't grease with POM? well idk if it's good or not cause everywhere I search it just says POM doesnt need to be lubed, but I tried super lube and the sound went away

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