Archived from the Tools In Action forum (Milwaukee). This thread is read-only.
I have a Milwaukee Super Hole-Shooter drill Catalog No. 1854-1. I bought it used years ago. I has worked well for me. I have replaced the amature and most of the gears in it through the years. I recently replaced 2 gears and it seems to be running hotter than usual. The front case behind the chuck has been heating up more than I think it should be. The rest of the case is fine. It sounds normal when running even under a load. I’m wondering if a bearing could be bad.
My first thought would be that it is a lubrication failure. If you also recently changed gears, they may need some time to break in as well. Bearings usually end up making some noise or set up a vibration or wobble before they fail
I’m with ECO. Doesn’t sound like a bearing. I would have to think there would be a squeal involved if it was.
That does sound like lack of lubrication.Also it may be something moved out of place when the drill was re assembled.