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I have a Scott SUB10 and the front wheel is a little wobbly. There's play in the hub, which is pic related, a Formula CL-51, but I'm not 100% sure if my hub has adjustable cones on it.
I read on Sheldon Brown that you have to disengage the locknut first to adjust the cone. I can only access one side of the hub, since the other has a disc brake attached. So I'm trying to do this:
1. Cone wrench on cone nut, box wrench on lock nut
2. Loosen lock nut
3. Adjust cone nut inward to reduce play
4. Tighten lock nut
5. Re-install wheel
However, I can't loosen the locknut. I really heaved on it, and it just doesn't want to budge. I'm afraid to break something. I also don't have a QR lever, even though it's a QR-skewer wheel; it's just an ordinary nut on both sides that you tighten to secure the wheel. Note that I'm not actually sure the exposed side is the one to tighten, I'm not sure how I would know which side to adjust.
Any help?