ok. so they will be destroyed.
if I got a tool with 32cm wide it should be possible to press it out without destroy it?
and the follow up: how do you press it in? ive found some shafts meassuring 32cm wide.
In order to have any chance of pressing the bushing out, you must have a block for the housing to rest on, with a hole only slightly bigger than the bushing. On top, the piston must of course be slightly smaller than the bushing, but still ride solidly on the outer bushing ring.
Then, as you apply pressure, you must heat the housing, probably with a gas torch. Just don't melt the housing, or catch the rubber on fire.

As the housing heats up it will expand and loosen its grip on the bushing, but only until the bushing also gets hot. So pressure, then heat, cool down and repeat.
Good luck. (you will need it)
