There's an article in ShopTalk that seems to cover this pretty well. I think it's called "Coolant Change" or something of that nature.
Remembering what I thought was a hard part, I just checked "Coolant Change" on ShopTalk and found:
# Remove the left side cover to gain access to the coolant reservoir
# Remove the reservoir mounting bolt and the breather hose by the cap
# Dump the coolant into your drain pan
# Reinstall the reservoir being careful that all the hoses are in placeI thought it was stinking hard to get the reservoir out from between the frame members, but the
reservoir is tough, and I got it out and jambed it back in without breaking it...
I changed my radiator hose at the same time, there's a fine line between getting the new one all the way on,
and getting it half-way on but then it won't go any further or come back off... lubing it (with radiator fluid? something
anyhow) is probably the key...
-Mike