[rotorwrench]

I generally cut them with a reciprocating saw and take them out in pieces. The old zinc castings like to expand as they deteriorate over long periods of time and the elements. I tried expanding slide hammer bushing pullers but they weren't centered well enough to do any good at all. My pneumatic recip saw cut it pretty easy. I had to drill and tap the new one for the little flush head screws but aluminum is easy to work with.