I inherited my father in laws table saw. It is a Sear and Roebuck 10" saw, knowing my father in law probably top of the line. He purchased it about 1970, I got it some time in the late 1980's
The original motor has "died" twice since I got it. The first time I took it to a shop. The guy dissembled it while I was there and found a lot of fine dust inside of the case, which he blew out with an air hose. He reassembled it and it ran perfectly until about a week ago.
It "died" again about a week ago. But again I found it was full of dust, that interfered with a mechanical switch in the Capacitor start assembly. Took it apart, blew the dust out and we are back in business.
The point is that if you have an old motor that dies, don't run out and spend $200 or more for a new motor.
With the old Sears motor there are four long bolts that go completely through the motor. Removing these bolt allows the motor to be separated into four parts. The end with the electrical connections, the Shaft with the electrical windings, the main body, and the opposite end.
Using an air hose blow the dust from each part. Concentrating on the board with the electrical connection, as that has the switch that get block. Reassemble as you took it apart.
NOTE: the motor should be unplugged, and all parts that come out MUST go back in as they were founds. NO parts left over.
Routinely blow the sawdust out of he motor and oil the bearings. The oil points on my motor are covered by little rubber plugs. I did not know what they were until the guy showed me the first time the motor "died"