I was wondering why I only had to oil the end with the brushes. That got me thinking and I decided to check out the brushes. I noticed that there was an awful lot of pressure on them, and that they seamed to be wearing at an angle. I grabbed the needle nose pliers and started adjusting them. I bent them slightly to lighten the contact pressure on the commutator, then a little twist to lighten the pressure on the end of the brush that was wearing more. I ran it as a motor for about 2 hrs last night and 4 today. It is purring like a kitten and I haven’t oiled it at all. I have come to the conclusion it’s the brushes and not bad machining.
And I made the adjustments without disassembling it.
Glad to hear of your success. No such luck
here.
Unfortunately, my noise is (off and on) coming
from the pulley end and there is real, actual,
no doubt about, it side-to-side play at that end.
Rather than just spinning in the bearing it is
actually rolling around in it. Is precessing
the right word? Should I say something to PM?
Wayne
Wayne, from your description it sounds like it might be possible to fit a washer (Teflon perhaps) behind the pulley to take up the slack.
Hope I'm understanding your description correctly?!?!
Glad to hear of your success. No such luck
here.
Unfortunately, my noise is (off and on) coming
from the pulley end and there is real, actual,
no doubt about, it side-to-side play at that end.
Rather than just spinning in the bearing it is
actually rolling around in it. Is precessing
the right word? Should I say something to PM?
Wayne
I would see if they will send you new bearings.
Unfortunately, the play is side-to-side in the pulley-end bearing.
The play is not longitudinal. The axle is racing around the bearing's
inner perimeter instead of just spinning in it. Not at all speeds but
there should be no play at all at any time.
Wayne
I would email them and inquire about getting a new pair. Or getting a pair of high quality ones from McMaster Carr.
Unfortunately, the play is side-to-side in the pulley-end bearing.
The play is not longitudinal. The axle is racing around the bearing's
inner perimeter instead of just spinning in it. Not at all speeds but
there should be no play at all at any time.
Wayne
That's exactly what one of mine does.