in a pinch you can take a nail of the correct diameter and grind the point flat
assuming you're replacing the roll pin because it's not strong enough...
If there's no clearance for bolt heads/nuts, you can strengthen a roll pin by taking a smaller diameter roll pin that fits inside the diameter of the existing roll pin and driving it into the center, in effect a double roll pin.
When it comes to the forces a transmission see's aren't the roll pins a designed weak link that shears hopefully saving other parts? Or at the point something breaks is it a moot point?
Sounds like unnecessary work to me. If it is not a weak link now, why not wait to see if there is ever a problem and take care of it then. If it ain't broke, don't fix it.
So Bill: is the problem that the shaft is in but you don't have the shaft to case bearings and the inner nylon bushings in ...so you need to remove the shaft to properly assemble?
If so justr remove as advised above and reassemble with same pins ...You will be OK
should have guessed you were talking about your throw-out shaft.
in this application a bolt is probably not the best. A roll pin is used because it has a tighter fit than a bolt. Unless you got lucky a bolt will have at least some clearance. Clearance means movement between pieces, which means impact force (hammering) which means it gets looser with time.
One thing to look out for with split type roll pins. For optimum strength the split gap should be aligned in the direction of force and not across the line of force. So with a TO bearing you should be aligned front to rear of the vehicle. This is so the force has less leverage to close the gap and cause looseness.
Roll pins are easier than bolts to remove, as far as you've come with your project I'm surprised you're letting a roll pin get you flustered
When it comes to the forces a transmission see's aren't the roll pins a designed weak link that shears hopefully saving other parts? Or at the point something breaks is it a moot point?
roll pins are the most economical way to have a no-play joint between a shaft and other pieces. They are usually the weakest link, whether or not that's by design I do not know.