Still not enough info to give a definitive answer. If you are sure you can completely trust the guy, it may be time for a motor change.
Generic response to this subject, from a guy who owns the equipment to properly weld aluminum.
Any more I take this approach. If it isn't a stressed area, it can probably be epoxied. If it is a stressed area, chances are it's not worth welding because the work required to do it right will be offset by the cost to do that much work. Due to the alloys and heat treating of some of these castings, some parts are near impossible to repair properly even using good welding procedure and technique. Bottom line is, I might weld an easily removed part such as a cover damaged in a crash. Anything not stressed on a main case, I would probably epoxy using very careful preparation and strictly following the manufacturer's directions. If it was an antique using sand castings, I'd preheat and weld it all day, every day, and remachine if needed. Hope that helps.
Keeping the "Hap" in "Happy Holidays"!
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Last edited by Dad; 11-11-2003 at 12:19 PM.