You’ll need an hydraulic pump such as this one:
The pump is used to push an adapted bracket (yellow) through the strut, pushing the old bearing out (no need to remove the shaft).
Old bearing coming out:
Done !
The new nearing is fitted using the same tool but the other way around.
As a reminder, max. play accepted for a shaft inside its bearing shouldn’t be more than 1/2 a millimeter. Any more than this, replace the bearing.