Hello everyone, I have RB25DET NEO CAS which seems to be working when tested for sparks, but the problem is that bearing inside is rusted and does not spin easily. (It spins but kinda roughly) I can probably put some oil and spin it to make it spin better but I have a replacement bearing which I would like to put in. I haven't seen any guide online for this specific CAS disassembly. I will provide images from different angles and my way of thinking how it should be extracted out, but I am not sure if that is the right way to do it.  Each image is noted with a number and arrows showing specific part of the sensor. 

Image 1: arrow shows locking pin that I think should be hammered out, then I can remove upper part that seats into camshaft. Then I will be left with the lower ring that still does not allow bearing to come out.

Image 2: I think that I need to use some kind of a puller and pull out that ring out, which allows me to get bearing free path to get out

Image 3: Shows back side of the sensor secured with 2 screws. It also contains locking ring which makes bearing blocked from getting out from that side. I think when those screws are removed bearing has a path to go out of the sensor housing, but still stays on the shaft. When I remove the compete shaft with bearing on it, I guess I need to somehow pull the bearing off the shaft and put new one on the shaft. 

Can someone explain me with more details and steps how to get it out and which tools to use to not break something? 

How to REPLACE CAS bearing on RB25DET NEO CAS (nissan skyline)