Well got back at it today with the same result. No budge!
Here are some pics.
View attachment 601784.
View attachment 601785.
View attachment 601786
This is to show how I was doing it. The chain around the tree, with 2x lumber to protect the tree. The end wrapped around the yokes and the other end is to my truck. I put the truck in 4wd and revved to almost 1800 rpm, and did not budge.
We are taking a short road trip and when we get back, I will give it one more try. If that dies not work, I will try to get the shear pin out. Have not tried hard but light taps with a 3lb hammer do nothing