Here's the response I got from a long time tractor dealer who has sold and serviced a bunch of these.
"The lower jack shaft may have slid in the bearing blocks some. Did you loosen the 6mm set
screws in the pillow block collars to see if you can drift the whole shaft the 1/2"??? Failing that
,if you loosen or remove the (3) 13mm bolts in the rear of the drive pulley you can remove the pulley.
With the pulley housing removed the collet will expand enough to slide on the jack shaft. The pulleys
are friction fits on both shafts. Sounds like something slipped here."
So the 1st section was the picture that I posted, I haven't even looked at how the drive pulley removal works. I'll take a look at it tomorrow.
DIYGuy (MarkS)
"The lower jack shaft may have slid in the bearing blocks some. Did you loosen the 6mm set
screws in the pillow block collars to see if you can drift the whole shaft the 1/2"??? Failing that
,if you loosen or remove the (3) 13mm bolts in the rear of the drive pulley you can remove the pulley.
With the pulley housing removed the collet will expand enough to slide on the jack shaft. The pulleys
are friction fits on both shafts. Sounds like something slipped here."
So the 1st section was the picture that I posted, I haven't even looked at how the drive pulley removal works. I'll take a look at it tomorrow.
DIYGuy (MarkS)