Thanks for the prompt response, yes unfortunately the front main seal is leaking a bit, I was prepared to live with it until the water pump went west and have removed so much that it is now staring me in the face, had already removed the six bolts and removed the belt pulleys, got to admit it took me a while to work that one out, with the bolt holes not being equally spaced ( didn't notice this ) the mark on the hub of the pulley's makes sense, balance wheel still seams to block the removal of the last bolt at the very bottom of the water pump, there is a notch in the perimeter of the balance / timing wheel, is this meant to facilitate removal of the offending bolt or it for the special tool for holding the wheel whilst removing the centre bolt. Have been out and purchased a new pump & front main crank seal earlier today so all ready to go if I can get the things off, anyone any idea what the special tool looks like, searched this forum, couldn't find much in this regard, does it bolt to the wheel or is it like a large " C " spanner