There are two approaches, actually three. First, I would use a nice sharp chisel about the right width and place the point on the glue joint between the tenon and the wedge with the bevel toward the wedge and give it a sharp whack. Do the same for the other side of the glue joint. If you have been successful you may be able, with a properly sized piece of hardwood drive the wedge deeper in to t he slot. Problem solved. Reinstall. Clamp the lyre up securely and spray accelerator around the joint between the pillar and the box. Squirt thin CA around the tenon and the box checking often to see that CA is not dripping down the pillar. Keep this area well coated with accelerator. Once the joint is completely filled it will set and you will have a permanent joint that will not come apart. Finally you can take the assembly to the drill press and use a brad point bit drill out most of the wedge on both sides. Drive the parts apart without doing undue damage to the finish. Make new wedges and clean the glue out of the old joints and clean out any remaining parts of the old wedge reassemble and make sure the pedal will be pointing toward the back leg of the piano when reassembled and glued up. Use a liberal amount of glue to secure the tenon in the hole and the wedge in the tenon. Clamp and allow to dry. Glue is not needed in this joint, only a real tight wedge. Yamahas and Kawais do not rely upon glue in this joint. That is why number one works so well and quickly. Newton
This PTG archive page provided courtesy of Moy Piano Service, LLC