Really basic question about jacking a JL for a spacer lift install

[Pcljl]

Sorry for the newbie question, but I’m installing a small teraflex spacer lift on a new JLU Rubicon.

I installed an AEV 2-inch spacer lift on our previous JK, but I couldn’t figure out the floor jack/jack stand procedure so wound up using a spring compressor. I do NOT want to do that again. I was freaked out the whole time.

What I did then was (1) floor jack under the middle of the axle (front)/diff (back) and then (2) jack stands under the frame near the control arms. For some reason, I could not get enough height on the jack stands to droop the axle far enough to pull out the springs cleanly.

So basic question is:

Where should I put the floor jack? My floor jack goes up to 19.68 inches. (3-ton Liftmaster with low saddle)

On the axle? Or is there another jack point?

Thanks, and sorry again for such a basic question.

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[caged]

i haven't jacked up my JL yet, but all my other jeeps, i jack up on the axle, front just to the left of the pumpkin (center of axle). and right under the pumpkin on the rear.
this way not only do you get the jeep high enough, but you lift each end evenly to fit the jack stands under the frame.

 

[theplankeye]

I won’t comment on how to avoid compressors in the rear (because I had to), but:

UNPLUG ALL CONNECTORS. TWO FRONT, ONE REAR

One of mine is now sealed with RTV and held on with a zip tie due to lesson learned.

 

[AZDustMuncher]

Did you take the tires off last time when you needed the spring compressor. I did basically the same thing as you described and had no problem getting the axle to drop far enough to get the stock springs out. With tires on it never would have happened

 

[Pcljl]

Did you take the tires off last time when you needed the spring compressor. I did basically the same thing as you described and had no problem getting the axle to drop far enough to get the stock springs out. With tires on it never would have happened

Yes, I took the wheels off. That's why I thought was jacking it wrong.

I put the jack under the axle and went up as high as the jack would go. (From browsing Amazon specs, my jack seems to go up as high as most others...and it's a new jack). Then I put the jack stands where the control arm mounts are. When I lowered the axle, I dropped the jack to its lowest (non-jacked?) setting, and I still had to compress the springs to get them out.

 

[KDB]

Yes, I took the wheels off. That's why I thought was jacking it wrong.

I put the jack under the axle and went up as high as the jack would go. (From browsing Amazon specs, my jack seems to go up as high as most others...and it's a new jack). Then I put the jack stands where the control arm mounts are. When I lowered the axle, I dropped the jack to its lowest (non-jacked?) setting, and I still had to compress the springs to get them out.

Once on jack stands (frame) use the floor jack to “lift” one side of the axle to push the other side down. Had to do this on my JK when swapping springs and it seemed to work well.

 

[AZDustMuncher]

Once on jack stands (frame) use the floor jack to “lift” one side of the axle to push the other side down. Had to do this on my JK when swapping springs and it seemed to work well.

I don't know, loosen your control arms, loosen track bar, disconnect away bar links, disconnect shocks, and make sure no hoses or wires are not holding anything up. Should drop down.

 

[Shots]

I just installed the Daystar kit on mine. I did a write up on it with some tips. The install should be basically the same.
Lift thread

To do the front, I put a jack on the frame rail behind the wheel (by the front door where the rail is still straight). Doing this way keeps 3 of the 4 tires on the ground so you can flex it a bit. Once you have a jack stand under the frame somewhere for safety, use another jack to raise/lower the axle. Doing this you can line bolts and stuff up with ease. The spring drops right out with no effort.
For the rear. Do it the same way (one side up at a time). I put the jack on the frame rail just forward of the tire. To get enough suspension travel to get the spring out easily, unbolt the rear track bar. Just like the front the spring will drop right out.

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