When I remove the trans the bearing/collar & fork seem to stay inside the bell housing. Then I remove the clips that hold the bearing/collar to the fork. Then remove the bearing from the collar & replace. It's a tight fit but not a press fit. You can heat the new bearing up & then install the bearing easily onto the collar.Search for "bread trick" if you want to remove the pilot bearing. To remove the throwout bearing, I'd just pull it off the input shaft by grabbing it with my hand and pulling.