My spare MTN bike Has a set of older Mavic rims and Specialized hubs. The front hub has been making a squeaky noise, so I decided to try to take it apart and repack the bearings. this hub seems to be different than some others I have seen. There was no place for a wrench. There are 2 caps one on each side, that I had to use a tiny screw driver to work off, it seems there is little rubber O-rings that hold them in place. From there on each side it looks like the hub uses a sealed cartridge to hold the ball bearings? What ever it is I have no idea how to get them out, there are no tiny notches to turn them or no bolts to turn. How do I proceed from here?