My new mate Seamus.

[mudski]

Just doing some general preventative checks and touch ups when u decided to check his tow ball mount to see for any evidence of rust.... Concluded with a high possibility when I couldn't even get it out lol. Any1 have any ideas with this one?

The one winning for me atm is find a nice big tree, snatch it up and drive away lol.(removing the ball that is)
But somethings telling me that's probably not the best approach to this task lol.

Personally I wouldn't be doing this. Imagine if it lets go when under full tension it would be just like a snatched towball would be. A deadly missile.

Remove the entire towbar, sit it upright with the tongue upwards and get some either hydrochloric acid, or phosphoric acid and pour it down inbetween the tongue and housing. Let it soak over night and try hitting with a sledgy or something. The acid will oxidise the rust. If you don't have those acids, you can use Coke, it also has phosphoric acid in it. Lol. And we drink this stuff. Albeit diluted...
I have both acids here if you need some. I live in Mill Park so...