Should control arm move when I use it to jack with? - Jeep Wrangler Forum
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Old 06-11-2013, 10:30 AM   #1
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Should control arm move when I use it to jack with?

Following the user manual, I jack the front up by using the front end of the lower control arm underneath the jack. I notice when the jack contacts this area, and starts pushing up, that the control arm moves up (inside its bracket) before the rest of the jeep starts to move up.

Is this normal?

Is this bad?

I realize with a Chrysler I have to ask BOTH of those questions.

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Old 06-11-2013, 10:51 AM   #2
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I think the jack is supposed to be under the axle tube where the control arm meets the axle. That's how I've always done it. It doesn't seem good for the bushing to have close that much weight on it so I guess I'm not surprised it moves a little bit

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Old 06-11-2013, 11:02 AM   #3
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Only potential issue I see is bending the bracket. There's little load on the CA on the ground. See if you can move the arm then.
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Old 06-11-2013, 11:03 AM   #4
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Quote:
Originally Posted by jkjeeper06 View Post
I think the jack is supposed to be under the axle tube where the control arm meets the axle. That's how I've always done it. It doesn't seem good for the bushing to have close that much weight on it so I guess I'm not surprised it moves a little bit
^This. Not under the arm itself.
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Old 06-11-2013, 11:08 AM   #5
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And that ^
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Old 06-11-2013, 09:35 PM   #6
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According to the user manual for jacking the front up, the jack is supposed to go under the control arm itself, where it sits in the bracket.

On the rear it says that yes the jack should be under the axle tube.
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Old 06-11-2013, 09:38 PM   #7
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Why wouldn't you want to use the axle tube in the front as well as the rear ?
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Old 06-11-2013, 09:56 PM   #8
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I haven't looked at my stock jack (hopefully never will I have a floorjack at home) but unless lifting on the control arm is the only way to do it I would lift on the axle tube as close to the spring perch as possible.
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Old 06-11-2013, 10:02 PM   #9
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I didn't read the manual on the jacking part but if the jeep weighs 4k and has a pretty even weight distribution, that's 1,000 pounds each corner. I wouldn't want to put that kind of weight on the control arm bushing. I've always jacked it up by the axle tube and will continue to do so.

But based on your original question, with about 1,000lb of force coming down on it, I'm not surprised it moved a bit and wouldn't call it abnormal for that to happen but to the is it bad part: I'd say probably and would recommend jacking it up by the tube to prevent this.
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Old 06-11-2013, 10:03 PM   #10
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I agree with you guys that it makes more sense to use the axle tube, but I still followed the manual. It's just one of those things where I had to trust Jeep.

But I'm wondering still.. if I see the LCA move in its bracket slightly during jacking does that mean I need to do something? Buy correct fitting bolts or tighten? Hmmm.
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Old 06-11-2013, 10:03 PM   #11
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Your owners manual is different than mine. Here is the photo from my book...
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Old 06-11-2013, 10:05 PM   #12
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This is where I put the jack on the front when I lift one side. On the back I just use my LCA skid now.
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Old 06-11-2013, 10:11 PM   #13
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My owner's manual clearly identifies the end of the control arm on each side as the jack point. Personally I put my trolley jack under the diff housing and the scissor jack under the axle tube as insurance, but I don't think the scissor jack is tall enough to lift the Jeep sufficiently by the axle tube to remove a standard Sahara wheel.
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Old 06-11-2013, 11:00 PM   #14
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Quote:
Originally Posted by legitposter View Post

But I'm wondering still.. if I see the LCA move in its bracket slightly during jacking does that mean I need to do something? Buy correct fitting bolts or tighten? Hmmm.





Quote:
Originally Posted by kjeeper10 View Post
Only potential issue I see is bending the bracket. There's little load on the CA on the ground. See if you can move the arm then.

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