need help fixing turn signal mechanism

On my turn signal mechanism, the little tab that keeps the lever in the right turn position has broken off. I saw on ebay i can get a new turn signal with wires for $53 or i can get just that piece that holds the lever in left/right turn. how hard is it to get that piece off and install a new one?

If was me... lol.... I'd get the whole signal if I'm understanding you correctly. I've had all of it out before and put it back in... no problem. It was on a 68 Charger. The right turn signal would not blink and I traced it down to the turn signal cam. It was dirty and I cleaned the terminals and it worked. But what you have is a different problem ... the plastic is broke so replacing might be best.