Ok I just finished putting the tractor back together. I replaced the entire TA clutch among other parts and the main clutch. We tested turning the shaft before we put it back together and it seemed to be working fine, at least we thought. After putting it back together we tested it by turning the engine over by hand and here were the results.
Worked fine in reverse gear with TA disengaged and engaged. Worked fine in forward gear with TA disengaged, but would not move forward in a forward gear with TA engaged. It would start to move forward then the TA clutch housing would start to spin and it would stop moving.
We have the feeling that it could be the over run clutch, but I would like some input before we tackle that one. Any help or suggestions would be greatly appreciated.