20-year-old Shop-Vac

I gotta 20-year-old Shop-Vac 8-gal. that's seen lots
of service in my little basement workshop.

When I run it now, it makes horrible screaming-gurgling
noises. I have disassembled: I can't see them, but it
appears to be bad motor bearings.

Are such units repairable? Any way to nurse the unit thru
another year or 2? Can't afford to buy a new one ...

TIA,
Puddin'

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