Replacing number five main bearing is the bear due to the main seal.
I use a small flat narrow bladed screwdriver to start the push the main bearing out of the retainer from the other side of the retaining tang,
As already mentioned, that is with all main caps being loose and drop down a little bit from the block, remove the bolts for each one at a time and then put them back in when your done installing the new main bearings to help keep the crank a little loose so it doesn't press hard up against any of the upper main bearings until you're ready to torque all of them, make sure to check and have enough thrust clearances also .