I took apart R's fan. It seems impossible. T series fans are fixed with metal frames. R series is made of plastic legs, and then welded with electric soldering iron. In other words, after your fan is removed, you can't put it back. Unless you stick it on. I haven't tried. I don't know if I can insist. It is not difficult to estimate. The fan can only be disassembled as a whole. The fan blades cannot be disassembled separately. It is possible to change the whole.

I don't understand what you mean by radiator. There is a metal heat conduction piece on the cpu. One end is connected with a fan for heat conduction. There is also a separate metal heat conduction sheet.