Some believe that swaging is unnecessary. If your drum indexes off the hub snuggly, then swaging is not needed since the tightened wheel will keep the drum in place like the rear drums. If the fit on the hub isn't snug you risk having an out-of-round drum installation; in this case, swaging locks the drum to the hub.

If swaging is necessary the drum has to be turned after swaging to ensure roundness.

Drum Swage.PNG

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