" wrote:

....
So I'm trying to put the old motor back on, and the pin won't go in.
When I got the saw, there was a bolt through the motor and carriage,
but I dutifully replaced it with the 'correct' Delta pin. I put the
motor down, and sure enough, although the pin is a snug fit in the
carriage, it's too small for the holes in the brackets on the motor.

I could try to find a smaller pin, but that would just be loose in the
carriage. I think the easiest 'fix' would be to drill the holes in the
motor brackets to fit the pin, but I thought I'd consult the wisdom of
rec.woodworking before removing metal I can't easily put back... Anyone
know if there's a difference between the pin diameter on the new versus
old Unisaws?
....

Must be...

Mayhaps the motor wasn't the actual motor from the saw itself if the pin
fits the carriage but not the motor brackets?

Although, I suppose they could have had a two-sized pin...

Don't see a problem w/ the drill-out scenario assuming there will be
enough material left after you do so.