recently my rear wheel started wobbling so I wanted to check its rear hub, bearing and axle.
I have a Shimano HB-RS470 hub which is a thru axle hub, and it look exactlly like the one in the picture below. The axle was very loose and I could move it from drive-side to brake-side by about 5mm, so I decided to clean and retighten it.
The problem I ecountered is that the axle and its nut (marked with number 2 in the picture) is not acting like a single piece, as I think they should. More precisely, if I firmly tighten no. 5 nuts, then I can spin the no. 2 nut while the axle itself remain unspinning. It makes the axle impossible (for me) to tighten even if I use 3 wrenches - 1 for tighening the nut (the inner one near brake rotor) and 2 for holding other nuts.
It also might be worth mentioning that if I tight no. 5 nuts tightly I'm unable to insert a thru axle (the most inner axle, not the one shown in pic) into the no. 2 axle from picture. To fit it I need to loosen nuts a bit. It wasn't like that before so there might be something wrong.
Is it expected to behave like that, or should the axle with its nut be a single solid piece? Visually it doesn't look broken, there are no cracks. And to spin nut and axle separately I need to hold the axle really tight.
Do yout think it's broken or there is something I'm missing out?
Thanks in advance, cheers