I've field stripped mine(mk111 talo) many times and still need a small wooden dowel and rubber hammer to knock the main spring out( and in).
The main spring should swing out however.
I've had mine in the same situation. Can't remember what it took to fix. I think hammer has to be all the way forward and clip out.
forget the instructions that say hold gun up or down to let gravity move hammer. Don't work on mine. Use a small screwdriver to move hammer.
These guns can be a real puzzle at first.
Go to rugers web site.There is a video to help you.
Wish I could be more help