I have a Ryobi wds 1600 sander. Somehow the drum has become out of balance. How do I balance it? The vibration is very noticeable. I checkEd the “weights” inside of it and all appear to be accounted for. This is very strange. Any ideas?
Take the sanding tube off and use a dial indicator see what kind of play is in the rotation. If it is pretty straight, then look at the rubber and see if there is a chunk missing. Then, check to see if the drive assembly has something stuck or bent. Maybe not in that order but those where I would start 1st