Bought a nut splitter, but the body of it interfered with the 1232 washer, so I had to resort to a carefully manipulated hacksaw, here's what's left of it:
I still don't understand why it wouldn't unthread, but the male threads on the rod are OK, gave them a clean up with a threading die. The two orings are indeed hard and brittle, the rod slid through them with no resistance. I opted to leave the other nylock in place at the brake end, no need to remove it, really. I suspect that the spinning nylock has something to do with the relief at the end of the threads on the rod.
Here's where I'm at:
I see one lip seal - is there another larger one hidden in the above assembly? Now I understand regarding the "modified circlip pliers" - I had to go one size down to open that circlip inside the bore. And regarding the oring that seals the brake end of the rod - do I need to remove that assembly to get at it? It's a bit deep in there.
I still don't understand why it wouldn't unthread, but the male threads on the rod are OK, gave them a clean up with a threading die. The two orings are indeed hard and brittle, the rod slid through them with no resistance. I opted to leave the other nylock in place at the brake end, no need to remove it, really. I suspect that the spinning nylock has something to do with the relief at the end of the threads on the rod.
Here's where I'm at:
I see one lip seal - is there another larger one hidden in the above assembly? Now I understand regarding the "modified circlip pliers" - I had to go one size down to open that circlip inside the bore. And regarding the oring that seals the brake end of the rod - do I need to remove that assembly to get at it? It's a bit deep in there.