Delta drive belt issues solved
Thanks to all the individuals who posted solutions. What finally worked was a friend forcing the belt behind the arbor pulley until it was almost folded in half which gave us almost enough room to get the belt started on the motor spline. The final assist came from my sailing days which involved looping a line around the inside of the belt and leveraging the belt to stretch a little and engage the motor spline. In sailing, it's called kedging where you take an anchor astern of a boat that has run aground and winch yourself free. Once the belt got started, rotating the the arbor pulley with a 1" socket and ratchet to free the line and fully engage the belt on both pulleys. I now know way more that I want to know about old Delta table saws.