Anyone reading a repair manual has dreaded seeing this line while doing a repair. Before starting the renovation of my Moto Guzzi V700 I had idly wondered how a swing arm pivot bolt could occupy the same space as a drive shaft and it took a look at a parts manual to discover how it could be done. Back to the repair manual to find out how to take these pivots out. "Using special tool No. 1290300..." Uh oh.
I had no special tool but lots of farmer experience; double-up the nuts on the stubs and remove. Turns out I was worrying needlessly, even though these threaded stubs had been undisturbed for nearly fifty years, they came out easily.