see update at the bottom
I'm trying to remove my Nexus SG-C6001-8D from its hub shell to grease it. Sadly Shimano's documentation doesn't cover the process of extracting the internals from the hub shell. The info I can find online is mostly for Alfine hubs, where after removing the sprocket on the drive side, you take off a small plastic cover to reveal a large plastic thread, which can be turned with a special tool to take the cover completely off.
In my case though, this doesn't seem to exist - below the sprocket there's only a large, rubber plastic dust cover that doesn't seem to have a thread anywhere and also cannot be removed by hand.
Are Nexus hubs different in that respect, and the cover does not need to be removed to extract the hub from the hub shell? Or is this because I have a belt drive bike, and the process is different than with a traditional chain sprocket?
My Nexus hub - note the lack of any thread or teeth to unscrew it, unlike the Alfine
I've disassembled the hub to perform regular maintenance (replacing grease). As it turns out, on this model, the dust cover simply pops onto the drive side of the hub and is not threaded. There's no need to take it off before removing the internal hub - simply undo the bearings and push it out from the non-drive side, the cover will come off together with the rest of the assembly.