little progress made so far:
Old bush, no damage to the casting, just one time
new and old pin together:
The bushing the sell wasn't the right size. A friend with a lathe did the outside. For the inside I used the adjustable reamer
reaming the new bushings for the spindles.

the grooves goes up until the top, it's both ways on this bushing, depends on the supplier.
Cleaned out the hubs, the bearings were still good.
I replaced the seal, at this moment it's wider then the old one. So may need to check the play on the bearings..
And new fresh grease
Also I'm happy I found this little screen filter, I never have seen it before between the fordson parts, but they do sell it for the ferguson. use F345N to find it at Kramp!
Still struggling to find a supplier for the bushing in the radius rod, same goes for the bush in the upper part of the steering gear (just below the steering wheel)
Next job is to take care of the track rod, the holes in the extension rod are a bit worn out.