We tried all manner of stuff and ours wouldn't budge!
In the end the only way we could get ours out was to hack at it with careful brutality using a very slim/cheap/sacrificial wood chisel. Just carefully hack at the bearing shell, making 101% sure not to damage the casing.
And just before we cut right through the shell, it started to come free. Took about 10 mins or so.
We have a small injector slide hammer(cost about $20 from a store in Tullamarine) with a thread on the end, to which we welded various attachments with nuts on them, which were threaded onto the slide hammer .. simply wouldn't budge.
The wood chisel is a softer metal compared to a cold chisel, and by the end of the hacking was ... well sacrificed.
If it comes out easy as Urban Panzer shows on his discovery2.com site .. I'd worry that the casing may be a bit too loose fit for the bearing shell.

