Cecil's unit was a rotary vane. Never did find a thermal switch, but was able to have a customer of mine take a look at it. He retired from owning an electric motor shop. His take was a short, and rather than rewind, he recommended replacement.
"Forget pounds and ounces, I'm figuring displacement!"
If we accept that: MBG(+)FGSF(=)HBG(F1) And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1) Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT? PB answer: It depends.
