My endlinks have seen better days in 10yrs and i'm replacing them. Helms says that you should put full vehicle load on them before tightening the nuts. How does one go about doing this? Do you simply use a second jack to push the knuckle upwards?

 

You can either lower the car back to the ground and then tighten them (if your car isn't super slammed) or put a jack under your lca, jack it up, then tighten it.

 

You could always put bricks under the tires and lower you car down

But I always just jack the lca up, I think its easier