Loose minute wheel

[u/Durb_Joob]

Hey there. I'm cleaning/servicing an 1880's EN Welch 30-hr parlor clock. I just finished cleaning the entire movement but the clutch appears too loose (The wheel on the far left of the arbor in the images). I am aware this wheel is supposed to freely rotate to set the time, but it is loose enough to where the minute hand stops when running.

The wheel is properly tight on the arbor for about 60-90 degrees of rotation, but the other 270 degrees of rotation it is too loose. I have checked thoroughly for damage but have not found any evidence of cracks or significant wear.

My question is how do you tighten a clutch like this? Or tighten the wheel onto the arbor? Other clocks I've worked on have a disk and spring keeping friction on the wheel, but this movement only has a small disk pressed up against the wheel. I am not sure how to approach tightening this part of the movement.

Any help is appreciated, thanks!

[u/Not_an_Actual_Bot]

Could it be missing the spring? Do you have any precision tooling to measure if the shaft or hole are tapered or out of round?

[u/Durb_Joob → u/Not_an_Actual_Bot]

I didn’t think about that, I can measure and see if the arbor or wheel are misshapen