Just to let you know I got steering arm off today.
I ground down a 2-legged puller, so it was narrow enough to get behind the arm.
Bit of tightening and belting on the end and off it came.
Just as well, as seal was pushed out.
Box has ice in it, so need to drain.
Mind it was -10C and good wind blowing today, so will have to wait to thaw out, as old tractor is outside....