I can't for the life of me figure out how to get the freehub body off of this hub. Everything I can find online about the Vuelta hubs says that I should be able to stick a 5mm hex key into both sides of the axle and just loosen them, but this hub only has hex on the drive side. When I try to loosen that, only the non-drive side nut comes off. This is a 2014 Vuelta XRP wheel. Thanks for any advice.
I just did this hub yesterday. Used 17mm cone wrench and I think 5mm allen on drive side at same time. Cone wrench held in place and allen (attached to axle) turns CW as if tightening. Loosens up and then you spin the nut right off.
I was only servicing the free hub so did not work to free axle from hub which likely takes a hit with mallet.
I don't have specific experience with this one, but the pictures suggest it works one of two ways:
From where you're at now, you bonk the end of the axle on the non-drive sufficiently hard and the axle slides out, possibly taking the freehub with it, or if not then letting it be removed.
You put the 5mm allen in the drive side end and a cone wrench on the bit with the cone wrench flats next to it, figure out if it's a left or right thread, break that connection and unscrew it, and the hub comes apart that way. I think this is more probable.
I actually don't have first hand experience with the Vuelta hub but based on this video Video of Removing a Vuelta Hub Cassette Body and your pictures I would predict that you need to use a cone wrench on the drive side and a 6mm hex inside the non-drive side axel to loosen the freehub body
I think you are all not correct. The freehub may actually be bolted onto the hub and the bolt head is inside the hub with the threads going into the freehub.
I have a Vuelta Pro XRP wheelset and getting my freehub off was a project. You have to get the axle out, first, and that is done by tapping the non-drive bearing out by tapping on the drive-side axle (be gentle).
After the non-driver bearing and axle are out, you can access the bolt head that holds the freehub onto the hub. For this you need a 12mm hex driver (Allen wrench), which is very hard to find. I found one on Amazon; They had it to me by nightfall.
Insert the Allen wrench into the hub from the non-drive side. You’re going to need an extender on the short end of the Allen wrench, to get some leverage. That’s all there is to it. :-) It’s the stupidest design that they could possibly come up with, really.
When you’re putting the bearings back on, use a large washer and a large socket to “tap” the bearings in evenly and straight. Again, gently and far enough in to anchor the axle, but not bind the bearings. Good luck and curse freely; it helps.