Hap Waldrop
Yoda
Offline
It's been good long while since I had to do this, and a recnt topic here, but one of yesterday's chore was to replace a ring gear on a 948 fylwheel. I had thrashed 948 crank so I bolted the flywheel to it and put the deal in my big vice, used a pice of 1" steel round stock and hammer to knock the old ring gear off, it took maybe 5 minutes or less, no real drama. The cleaned and glass beaded the flywheel to spruce it a bit. Took the flywheel sat it on cender block, grabbed the new ring gear out towards the very edge with vice grips so I had a good handle to hold the ring gear while it was heated and make sure to postion the vice grip towards the edge so it did not interfere with the fitment of the new ring gear against the flywheel with the vice grips in place. Fired up the torch, I held the ring gear while my buddy heated it, we worked our way around the ring gear, making sure to not turn it red or anything, just get some heat to it to expand it, first try it was a just barely too snug to drop on, a few more minutes of heating and it simply dropped on, let it cool down slowly and va~la, new ring gear installed. I had forgotten how easy a job this really was, piece of cake. If you took it to a machine shop this is exactly how they would do it, and by far the best way to do it, if you have acess to torch, then don't let this job scare you, it was very easy job.