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I want to get into this hub to lubricate the bushing. Every instruction I see on the Internet says to use a 5 mm Allen and a 17 mm wrench. But there is nothing to put a 17 mm wrench on. There is the internal nut, but I can't get a wrench on that; it is behind the hub shell. Do I have a different version of the wheel? Or am I missing something?
I believe on this one you put a 5mm wrench in both endcaps and turn counterclockwise. You're trying to get the drive-side endcap off. If it's the non-drive one that breaks free first, there should be a larger size allen fitting in the end of the axle that will be exposed when you take it off. Stick the 6mm or 8mm or whatever it is in that and then you can get the other endcap off, and then the freehub should slide off. Careful not to lose any of the pawls or springs.
Nathan's answer is correct, with the comments. Here is a picture to show
what non drive side looks like with that endcap off. I had to pull pretty hard, but it comes straight off.
