Not a big deal
Replacing the pendant on a late model Oday 23 (like yours) is easy if the boat is out of the water. Its just a line attached to a shackle. The shackle attaches to a wire loop that is glassed into the trailing edge of the centerboard. No wires, no winches, no complications.When the boat is out of the water, drop the centerboard down about halfway down and cleat off the pendent. You should have a couple of feet of free pendent line in the cockpit. Remove the plastic grommet that surrounds the pendant line as it goes into the bridge deck in the cockpit. You will see that the space for the pendant is much wider than you thought. Untie the stopper knot on your old pendant and completely remove the grommet. Take your new pendent line (I recommend buying it with a loop eye already spliced into the end and tape or sew the end of the new line to the end of the existing line. Make sure its a strong connection and that its not too wide to fit through the line tubing. Pull the new line down into the tubing by pulling on the old line from outside the boat near the centerboard. Once the new line comes completely through, separate the old line from the new line, attach a new shackle to the new eye (or tie a bowline), and then attach the new shackle to the centerboard. Piece of cake.As for replacing the wedges and the pivot pin, I can't help you there. Never done it, don't want to. If it ain't broke, don't fix it. If you want to take the assembly apart, try asking Rudy at D&R Marine if he has replacment parts or any diagrams of what it should look like. It has to be a simple set up. Good luck.