I was in a crunch when I did mine, so I bought a bolt, two nuts, and one locking nut, all 22mm, tightened the nuts and locking nut on the bolt, then used that as a make-shift axle tool. Also, you can use a 22mm Craftsman spark plug socket with, I believe, a 1/2" drive torque wrench...I'm pretty sure it's 1/2"...that's probably the cheapest and easiest way to do it. Or get the axle tool. You won't be able to find a 22mm allen wrench. Trust me.
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