I blasted the rear part of the frame. I did the same treatment as I did on the front section.
I struggled and struggled trying to get the shaft that the pedals pivot on to come out. I thought it was a press fit and I could pound on it to get it out. I didn't want to go baliistic and break something. I did a bit of research here and found that there is a roll pin holding the pivot shaft in place. Once I found that (it was hidden in gunk), I was able to drive it our and the shaft came out nicely. I was able to clean it all up. It was pretty hard to move the pedals before, there was a lot of old dirt and rust in there. I don't think I could have gotten them working well again without taking it all apart.
