I think your talking about the bolt that holds the control arm to the frame if Thats right there is a cam that the bolt slides in and the cam goes to the frame bracket.I had to break out what I could and bend the frame mount to remove the part.After doing this I had to set the part up in a drill press and use a 5/8 masanary drill to drill the sleeve out for it is a hardened part.I think if you can get it to move enough to pull the axel out I Would try to do it on there.If you can get a big washer and some threaded rod to pull the new wheel bearing into place then to pull the hub back into place.There is a good write up on rock auto for the front wheel bearing replace wiki that tells tools to get from harbor freight.