My old craftsman shop vac started to smell "hot", like the motor was burning
out. I removed the top cap over the motor, and verified that the brushes were
fine. On further inspection, I discovered that there were two wires that had
broken loose from their commutator connection. I carefully heated the wire end
with my soldering iron, then scraped the insulation with a knife, and scraped
the connection point on the commutator, and then soldered them back in place. It
now seems to be working fine. FWIW.
garage sale Shop Vac let the magic smoke out, just as I started the
quarterly cobweb harvest. I already blew 40 bucks at Menards buying the
replacement. (which, to my pleasant surprise, is backwards-compatible
for accessories and filters, despite being 20? years newer. Good thing,
because I already had a double-length hose, round brush, semi-hepa
filters, etc, from the old one.)
Maybe before I pitch the carcass of the old one, I'll open up the motor
box and see if it was the same problem with mine. A spare can and motor
could come in handy, if I ever need to suck up anything real horrible.
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