[BILL WILLIAMSON]

To keep the axle key in place, I always put a little "ding" halfway up the keyway & tap in the key, so the key stays in place. I also set the key 1/4" out past the shoulder of the axle at the threaded end. When the hube slides "home" on the taper, then tap the key flush with the shoulder. And remember, that radiused end of the key goes DOWN in the end of the keyway at the BIG end of the taper. Bill W.