Y-Axis Keeps Crashing – Need Advice After Trying Several Fixes
Hi all,
I'm experiencing a repeated issue with the Y-axis on my MK3 printer. The Y-axis keeps crashing, and while I’ve looked around for possible solutions and tried a few things on my own, I’m hoping someone here might be able to point me in the direction of additional resources or suggestions before I consider a full teardown.
Here’s what I’ve tried so far:
Cleaned and lubricated the Y-axis rails.
Re-tensioned the Y-axis belt.
Attempted to align the Y-axis belt so it remains centered.
Despite these efforts, the problem persists. I’m hoping there’s a video, guide, or some advice from anyone who’s dealt with this issue before that could help resolve it. My last resort is disassembling and rebuilding the entire Y-axis, which I’d prefer to avoid if possible as I have other projects I’m working on.
Any guidance or suggestions would be greatly appreciated!
Thanks in advance!
First, with the power off, move the axis by hand; is it smooth? Does the resistance stay the same over the whole range?
Check the smooth rods are not damaged/scratched. Check the idler pulley is not clogged, out of line, or damaged (loosen the belt and try turning it with your fingertip, is it smooth?)
With the belt loose try turning the stepper motor by hand; is it smooth? - you will feel the steps but there should be no grating.
Let us know what you find.
Cheerio,