Nic my old compardre,
What you will attempt to do is to lightly apply heat all around the area I show in RED. NOT TOO MUCH the goal is to slightly expand the outer part, this should allow you to gently tap in the direction of the green arrows.
You have to be fairly quick because you don’t want the heat to go into the DC. You also don’t want to heat treat the part. If you use a butane turbo lighter, I find this is sufficient heat for moving rusted or stuck parts..
Have your hammer, a brass punch or punch, ready, pull while you heat, if this doesn’t do it, immediately grab your hammer..
Hope this helps..
