Cleaning and painting my impeller fan and noticed a little counter-balance weight pinned in the front. Factory job or P.O. attempt to balance the fan ?
All the blades are intact, no broken fins.Click to view attachment
Full Version: Impeller balancing ?
Probably original, I've seen bigger pieces of rod than that used in the same way.
And now your fan is unbalanced. 
QUOTE(McMark @ May 24 2017, 05:41 AM) 
And now your fan is unbalanced.
just gonna say I hope you marked some how ,it needs to go back together the same way it came apart and still may need to rebalance....easy fix! imo good luck
QUOTE(McMark @ May 24 2017, 05:41 AM)
And now your fan is unbalanced.
Nope: Previously marked and put back in original holes.
Do these have to be balanced at a machine shop? I have one I took apart thirty years ago and THINK I was careful to put it back together properly. But I would like to make sure before putting it back in service.
QUOTE(bbrock @ May 24 2017, 07:51 AM)
Do these have to be balanced at a machine shop? I have one I took apart thirty years ago and THINK I was careful to put it back together properly. But I would like to make sure before putting it back in service.
You can do a simple static balance that will get you close,but not as good as a dynamic balance. Luckily these little fan don't have a lot of rotating weight.: Get one of these nose cones on the video and don't cut but add:
https://www.youtube.com/watch?v=uCV9rGVprEses
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