The issue here is finding the right bearings for the "transmission counter shaft"
I will try to insert my pictures as I go along within the text.... never tried it before must see if I can do it as per Hanno's instructions.
First thing to do is to find a spare tranny to play with. Had one with a missing PTO cover so it was dry as a popcorn fart and a lot easier to take apart.
First thing to remove was the back cover..... the top four bolts had already been removed due to a catastrophic failure.... the bolts from the flange on the output flange had worked loose and broke the casing and decapitated the four bolts..... that is why the tranny was a spare or parts donor.
The flange was removed first then the cover came off after removing the remaining 3 bottom bolts..... remember to save the spacer on the inside of the cover. The photo shows the rear side of the tranny. The bottom shaft is the countershaft we need to get to.
Now to insert the picture.
I think it is working.
So the tranny has to be taken apart to get to the countershaft at the vary bottom. First remove the shift cover.

No surprises.... the gears are dirty, surface grime and rust but truns freely and no missing or chewed up teeth.
The front cover of the input shaft was removed...saving the 7/17 bolts and the special retainer washers. A bit of tapping on the rear fo the output shaft with a brass hammer moves the entire shaft and will pushout the front bearing and the front of the input shaft..... pull out the input shaft and bearing.... the rear part of the shaft will remain in the tranny
....careful because inside the shaft is a small bearing shaped like a squirrel cage.... wrap up with a paper towel and put a side.
Will continue on the next posting...... obviously having an Australian problem.
( seems all my cell phone pictures are upside down)
Cheers