I just recently redid the brakes on my '55 3200, and I'm guessing that the system will be pretty similar. If it's the post that I think you're talking about, it goes on the top of the backing plate, the pads rest up against it, and the 2 return springs clip onto it. If that is the case, the lock washer and nut go on the back side of the backing plate, and the odd looking spacer should just slip on the very end of the post (inside the drum). Double check to see if the post has a special groove in the end so that the spacer can only slide on a little bit. Nothing really holds it on there except for the friction between the spacer and the post, plus the return springs (the spacer separates where the shoes rest and where the springs clip on). I drew up a little diagram below to help describe it better. Again, I'm not sure if we have similar brake systems and I wish I was at home to double check for you. If they are different systems or I'm thinking of a completely different part, at least I had fun doodling
. Hopefully this will help though. Good luck!
[img]http://www.wpi.edu/~nrw/brake_post.jpg[/img]
