Clicking sound when z going up and down

During some maintenance I noticed that the spinning thing undernearth the z motor was clicking. Is this something to be concerned about? anyway to fix this?

Hi Jeff,

Did you ever find any resolution / root cause?

This just started happening on our Woodworker X50.

For ours, the click seems much more pronounced when Z going up, almost non-existent on the way down. While it’s hard to tell, it seems to occur once per rotation of the coupler.

Not yet had a chance to really dig in.

Thanks!

Greg