thanks everyone for the replys !!
the tractor split easily, once chocked following the instructions given. no major dramas. the PTO was twisted just on the otherside of the pump and once cut, slipped out quite easily.
Now just a case of putting everything back toghether again.
I did notice though that when I was playing with the pump drive coupling, that sometimes when I tried to engadge, it would not drop straight into place and kind of half engadge. Should i pull it apart and have a look while Im in there. Or is it normal and you just dont notice when using the actual lever.