The best way to remove/install wheel studs is with a hydraulic press. Definitely don't try to pull a new one into place with a lug nut and a stack of washers, or something like that. It might be possible to use an air hammer with a blunted punch to drive one in from the back side, but make sure it isn't trying to displace a lot of metal as it cuts its new splines in the hub. I have had to file a little off the spline of a new stud at times to ease installation a bit. Removing one stud by threading a lug nut on flush with the end, and using a BIG hammer to pound it out usually works, so you can take an example to the parts store, but getting one back in that way can be challenging! I prefer a press!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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