Next on my list is to work on picking it. Please understand that I am fresh off Kwiksets so this is a bit more of a challenge. But for now, I thought I would share the disassembly process.
If my pics are too large, please tell me and I will resize them. I tried to show as much detail as possible.
OK first the picture of the American 5200 Series Padlock


Ok now to take it apart. If you look close down the shackle hole, you can see a phillips head screw. It's hard to get a good picture with the shadow it casts, but you can make it out if you look closely.

Just loosen that with a phillips screwdriver

When the screw comes out, there is a plug in the bottom that it is screwed into that will also come right out.

At this point, you need to close the shackle and remove the key. This will allow you to take off the metal plate that keeps the plug in place.

You can then remove the plug from the padlock body.



You can then remove the C-clip from the back of the plug and take out the interior to get to the pins. Be careful not to let the pins fly out as you withdraw the inner cylinder.
Here is a picture of all pins removed and a close-up of the pins. You can see, upper and lower pins are serrated and there is one spool in the middle.


Now that you have seen the insodes of the lock, you can carefully reassemble in reverse order.
How many have encountered this lock? What do you think of it? Like I said, coming fresh off Kwiksets, this will be more of a challenge for me. I look forward to being able to pick this. I will keep you updated.
Enjoy!