[Tim Ayers]

If the hose is hard/stiff, I've found a heat gun (on fairly low temp) or boiling water poured over it helps to soften it and should allow you can bend/twist it out of the way. Sometimes you need to get a pick or something to free it from the pump. They can tend to "grow" on there after a while.

I've also found removing it from the radiator as well gets it out of the way and you are not fighting the hose and the pump.

As others mentioned, if you can't see it with how you are doing it, make sure you are squarely on the head of the inside bolt and don't round it off or break it by using too much force.

Ford had a lot of great ideas, that bolt inside the pump wasn't one of them.

If the pumps were installed that the same time, you may want to consider replacing both. If one is leaking, it's possible the other isn't far behind. You have to drain the cooling system, so it may be a good time to do both for peace of mind sake.