It's would be easier to remove the pump, if your truck is 4wd you will
never get the pan off unless you drop the axle.
The process is pull your belts off, fan, shroud, belt cover, you still will need to
let the pan drop some in front or you will have a leak, and there are 2 studs
in the front that need to be removed to get the pump off.
You will have to remove the timing belt, so it's a good time to change that
too, then remove the crank cog, remove the nuts/bolts that hold the pump
on and pull it off the crank snout.
Assembly is just reverse order, I probably forgot something steps wise along the
way, and I know it sounds like a lot of work, it's not too bad, but working in the
cold sucks so if you want to put it off for a while (unless this is a DD) you can
Wild