Or a piece of flat bar to engage the slots and then just turn the bar with a shifter.
Remember to note the position that the original tiny split pin occupies....count the turns needed to undo...this will give you some idea of the "preload".... The spring is likely to be quite worn. They are conical not cylindrical as you can see from the exploded view, so they compress within themselves. They are expected to still function as a spring, over compression removes that ability.
Remember to note the position that the original tiny split pin occupies....count the turns needed to undo...this will give you some idea of the "preload".... The spring is likely to be quite worn. They are conical not cylindrical as you can see from the exploded view, so they compress within themselves. They are expected to still function as a spring, over compression removes that ability.