For those that have never seen it done, this is how we remove stock style wrist pins from piston/connecting rod assemblies. (Later on in the thread I'll show how they're installed)
The pin is fitted with an interference fit in the top of the connecting rod and it takes a lot of force to push them out so a press is used. A support is placed under the side of the piston (different supports for different pistons) with a hollow base support below that to provide enough height to push the pin down. Then a tool that fits inside of the wrist pin with a shoulder that will push the pin is inserted. The tool is smaller in diameter than the pin so it will fit through the hole in the side of the piston. In the bottom pic the wrist pin is still stuck in one side of the piston but can be pulled out by hand. The "tight" fit is in the top of the connecting rod.
