try soaking it in liquid wrench for a few days, 2nd gear is direct drive, 1st is under drive and 3rd is over drive, if 2nd isn't orking it is often because the oil go to thick, if it has an oil fill hole then you have a nice one, other wise you have to losen a dust cover over the bearings and fill it there with liquid wrench.
what brand of hub is it? I have a pile of sturmy archer hubs and wheels, a shimono 3 speed on my personal bike and I think I have a bendex that no longer works.
you can still get sturmy archer hubs new, along with the shimono 3 speed, maybe 4 speed and 7 speed, the 7 speed is awsome and massive.
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