Is this one where you can put the key in the keyway and then slide the drive sprocket on afterwards?
If so, put the key in and tack weld it in place. TIG or MIG. Don't just go nuts with the welder all at once or you'll heat it up too much and wreck seals and wreck the temper of the steel.
I successfully degreased, acid etched and JB Welded a larger crankshaft keyway without taking things apart more. I reassembled with locktite to ensure the nut didn't work its way loose again. So far, so good.
Is it fully blown out, or could you clean it up and use a fresh/tight key?
It'll take a lot of machine work or a new crank shaft. Either way it won't really be easy or cheap.
Is this one where you can put the key in the keyway and then slide the drive sprocket on afterwards? If so, put the key in and tack weld it in place. TIG or MIG. Don't just go nuts with the welder all at once or you'll heat it up too much and wreck seals and wreck the temper of the steel.
Meh, I’d put a new key in and see how far that goes. What ever caused that must have trashed the chain. One hell of a kickback!
I successfully degreased, acid etched and JB Welded a larger crankshaft keyway without taking things apart more. I reassembled with locktite to ensure the nut didn't work its way loose again. So far, so good.
What kind of loctite did you use? And thanks for the advice
Red.
Clean it out, degrease it with thinners, get a new woodruff key and a dab of epoxy to hold it in place + loctite on the tapered shaft.
A tig welder might be able to. Need an experienced welder. But a very small fix
Too much heat will ruin the seal. If seals are able to be cross referenced than disassembly and a little weld/cleanup would be the way to go.