I found 3/4 ton 52 brake parts are available through O'REilley, I think it was in the Wagner brake catalog... didn't help me much since I was looking for the 1.5 ton brake parts :rolleyes: ... but I know that they have the 3/4 ton ones at the wharehouses.
I'm gonna recondition mine through the white post (in the links section) instead. won't cost much more than all new ones, and has a better shot at being able to get help with them if something breaks.
just my $.02
-Mike R.