Like mentioned above, you can heat the alum hub at the bearing area. I've used a propane torch for this. I also just use a 12" piece of 3/4" round stock just because it's easier to hold in place for me and it's heavy enough to bang the internal spacer out of the way. Another thing I do is to use a magic marker and put 2 marks on the hub 180 degrees apart so I know where to hit the bearing without getting it cocked. Once 1 side is off I use a puller made from some large washers and threaded rod. I use it as a slide hammer. Use the same device to install the new bearings.
Tony
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