As he tightens the bolt, pressure is directed down to control arm through the sockets so ball joint forced up. not sure what the stand is for accept to prevent control arm from bending where the sockets are pressing down.
some of the youtube videos might be useful
[ame]http://www.youtube.com/watch?v=oSadIUnS6Pc[/ame]
this is pic of my 93 s13 ball join
this is not my ball joint. ca
these are ball joints for s13
