Repairing damaged shear bolt hole on big baler flywheel.

In this video I have a big flywheel from a Massey Ferguson baler in for repair. The hole where the shear bolt bush goes had gotten damaged due to the incorrect shear bolt being used. Because the hole is damaged there is nothing to support the bushing anymore resulting in the bush cracking. Nice simple repair. I knocked the old bush out and placed the flywheel onto the new Huron milling machine. To fasten the flywheel down I had to cut some new plates out on the cnc plasma table, I used the gas torch instead to ensure the slots didn’t have a taper. Once the flywheel was secured, I used an edge finder that fit snuggly into the shear bolt hole to align the milling machine. I then switch over to a drill, drilled the hole out and finished with a reamer to get a nice accurate hole. To sleave the hole to get back to original size I made one on the lathe. This had to be made with an interference fit on the OD and the ID and needed a shoulder in one end for the flange on the bush. Once made, I applied bearing set to the sleave and knocked it in with the copper hammer. To ensure the sleave wouldn’t be knocked out if the bush needs to be replaced, I drilled and tapped another little hole for a grub screw to hold the sleave in. After removing the flywheel from the mill, I gave the hole a quick polish with the sanding wheel and then knocked in the new bush. Hope you enjoyed the video. Thanks for watching.