If we are talking about a screwed construction, then it shouldn't be too hard to dissasemble at home, cleaning all the gunk with, say, break cleaner or pure acetone, and then assemble again with some oil and a touch of thread locker if needed.
The sharpening of the serrations might be the trickiest part because unless you go one by one by hand with the corner of a triangluar stone from the Sharpmaker... you will end up rounding them off.. eventually.
As long as you don't loose any part, you should be ok!
Mikel