I was disassembling the rear brakes on my 41' half ton and the clip in the picture link dropped out. It's not obvious where it came from, and how to get it back in the right configuration. I could not even find it in what few brake diagrams I found on line. Can someone help me?

http://s767.photobucket.com/user/jtfarm1/media/41Rearbrakes_clip_zps6516c550.jpg.html?filters[user]=138112590&filters[recent]=1&sort=1&o=0

These pasted links always worry me!! Let's see if it works?