Old Motor Help
I have a fairly old motor,and one that is quite big at 1½ hp. It worked fine a few months ago, but now when I snap on my bandsaw, it just humms. I even tried jump starting it by turning the wheel by hand, but to no avail.
Now the bandsaw is my back up saw so it sits idle for long periods of time. I doubt its suddenly gone bad, but rather just kind of stuck. Its in a hard to get at spot so I prefer a method that might get it running that is quite easy. My dad suggested spraying some WD-40 on it, waiting for it to dry up, then starting it, but my understanding is that WD-40 is a water dispersion product and really does not dry. If it would work I would try it.
The only thing I can think of is to pull the motor out, get it apart and then stone the comm a bit. Maybe a little graphite lube and see if the cleaned up armature and brushes gets it going again.
I have always been kind of "scared" of digging into these motors, but I would like to get into electrical motor rebuilds. I worked on 3 million dollar locomotives and 15 million dollar yachts so what can be so bad about a 200 dollar motor? Anyway I have about 5 electrical motors that need repair/ maintenance. Do you guys think you can educate me on some of the more simple rebuilds? I look forward to learning new things and don't mind a bit of wrenching.
I have no intention of traveling from birth to the grave in a manicured and well preserved body; but rather I will skid in sideways, totally beat up, completely worn out, utterly exhausted and jump off my tractor and loudly yell, "Wow, this is what it took to feed a nation!"