Brake drum assembly question.

[In The Ten Ring]

It's like everyday I need to ask ya'll something!

I tore down the driver's side (rear) drum and brake assembly, used my dremel tool's wire wheel to clean off all the rust (a lot of it) but the little geared wheel on my adjuster/pivot nut WILL NOT TURN. The Haynes book I bought suggested replacing it. Naturally Advance Auto has never heard of it for that year (rather like the radiator you guys suggested and I bought from them).

Anyone have an Advance Auto part number for me? Should I just soak this thing in something?

Here's a pic, if I get it to work.

(Oh yes, I wore a mask and goggles for the brake cleaning)

http://i1313.photobucket.com/albums/...ps4828e6a8.jpg

Oh, and I could not for the life of me disconnect the parking brake from the actuator so I just cleaned the actuator as it hung there. Is that normal?