Wha?

I don't know. I took one of those apart a few months ago and heroically put it back together, but I can't remember the details much. I can tell you if you can avoid taking it apart do so, it's very hard to put back together. I believe the axle bearings are lubed seperately, like you'll want to grease them, but it seems strange that they would produce a squeak. I couldn't speculate what might be squeaking. If you take it apart some, do not pull the driver out, do not pull the axle out. If you can get the sprocket and dust cap off to get some oil to the, uh, bearings for the sprocket? Ring bearings? If you can do that without taking anything else out, that might be your best bet to get rid of a squeak.