Phil has a good page on recapping radios at
http://www.antiqueradio.org/recap.htm
However I would not try to remove all of the old part's leads
from terminals of tube sockets or band switches or pots or
elsewhere for that matter. These terminal lugs were not
designed to take the stresses that lead removal would cause.
You really don't want to break a lug off a band switch or tube
socket. Just clip off the old lead near the lug and solder the new part's
lead to it.