dissasembling a Miche Primato hub for repacking
 

my Miche Primato hubs are a bit rough (particularly the rear hub) and I would like to repack the beatings .
I was able to access the RH side easily.
I cannot though figure out how to access the LH HDS side.
if I loosen the grub screw on red flange and hold it with a wrench an Allen key seems to partly unscrew the silver end cap.
but then it stops.
before I mess something up, I thought I would ask here for guidance for how to proceed?

is that silver NDS cap just friction fit? Should it unthread further? if so, how?
https://cimg7.ibsrv.net/gimg/bikefor...0483aed735.jpg
https://cimg9.ibsrv.net/gimg/bikefor...3082d23953.jpg

https://cimg0.ibsrv.net/gimg/bikefor...cd691b8b33.jpg

Click on the image and enlarge for easier readinghttps://cimg0.ibsrv.net/gimg/bikefor...c716413b97.jpg

super helpful. this sheet gave me the confidence to press on.
for what's worth things get a bit stiff in the axle after a few years. This one needed the gentle help of a flat bladed screw driver to lever the free hub body off.
after that, I realized that before I wasn't even close to the hub bearings (I had only accessed the freehubbearings.)

https://cimg8.ibsrv.net/gimg/bikefor...3334280af7.jpg
https://cimg7.ibsrv.net/gimg/bikefor...4117ff475b.jpg
https://cimg5.ibsrv.net/gimg/bikefor...0bb053b9bc.jpg