If your hanger pin is threaded with a grease fitting on the outboard side and you have a hole lined up through the truck frame, here's what I do to remove the pressed in bushing.
Take the grease fitting out of the pin.
Un-screw the pin from the bushing.
Turn the pin around and screw it back in until there is only about 3/4" showing. This is done so you're hitting the solid end of the pin, not the drilled hollow end.
Using a 8 pound sledge hammer take about a 18" swing and hit the pin dead square head on. As the bushing moves in, screw the pin out for another hit and re-peat until you've driven it out through the hole in the frame.
Sometimes a little heat on the cast hanger bracket helps...
Hope this helps,
Mike B
