Originally Posted by
badhabits727 The bolt was the BIG 1.25" (31-32mm?) that goes over the end of the axle, right before the toothed ring and cotter pin. You can see it when removing the center cap from the rim.
If there is a cotterpin in there and its installed correctly then there should be no reason at all that it would come loose..
Those pitches are to stop the axle from moving and having it come loose can cause some damage to the spindle plus if it comes all the way off you could do some serious damage. If the cotter pin is too small to hold it when its tight then use something else that will hold the bolt in its place. It's possible that this is the cause of the other noises. Clicking is not only from axles but it can also be from bad bushings or something of that sort