well, I don't have a write up, or any pics, but here's what I remember from when I pulled mine off to rebuild it;
The steering shaft has a splined "clamp" thing on the end of it. You have to fully remove the bolt from that clamp, and it will just slide off of the box (That is, assuming that the slip joint in the shaft isn't siezed, and you can actually compress the shaft.) If you can't compress the shaft, just remove the clamp bolt, and you can pull the box out of the shaft once the box is un-bolted from the frame.
I found it much easier to disconnect the lines from the pump and res, and remove the box with the lines attached. Once the box is removed, you can place it in a vice, and it's much easier to remove the lines.
You will also need to remove the pitman arm. It can be removed without a puller, but having a puller makes it a lot easier.
And to remove the box, IIRC, there are 4 bolts that go in from the outside of the frame.
maroon 1987 Grand Wagoneer. stock for now...