I am looking at replacing the control arms on my 99 xj, but got some conflicting adive.
Am I best to jack it all the way up with the front wheels off the ground to do this, or should I only jack it up a little to take the weight, but leave the wheels on the ground?

 

jack stands under the frame, wheels on the ground so you can roll the axle into position

 

Thanks. Will give that a go

 

Couldn't you just leave it all on the ground and replace one at a time?

 

Yes. I believe the jack stands do no lift jeep much, but secure it so front wheel can be rotated, which aligns control arm bolt hole. I like using the stands also, they can remove some of the preload off the springs.