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Old 09-15-2013, 12:29 PM   #1
O19
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Lifting TJ under front diff?

Could it bend the stock track bar on an unlifted TJ?

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Old 09-15-2013, 12:31 PM   #2
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lift the from the control arm mounts or the center of the axle tube. don't lift from the track bar.

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Old 09-15-2013, 02:41 PM   #3
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I meant jacking it up under the pumpkin, not the track bar itself. When I had new tires put on, they lifted it with a floor jack under the front diff cover and afterward I noticed the axle was off center a little over an inch. Now it may have already been that way, and I just didn't notice. Finally figured out the track bar was bent and centered the axle by installing a new factory bar. I thought they should have jacked it up under the frame rails, but have been told that many shops do lift under the pumpkin, however, since the left bar mount is on the frame and other on the axle, it seems to me the bar could get kinked on the curved part of the bar by the weight on the end of the axle.
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Old 09-15-2013, 03:12 PM   #4
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I meant jacking it up under the pumpkin, not the track bar itself. When I had new tires put on, they lifted it with a floor jack under the front diff cover and afterward I noticed the axle was off center a little over an inch. Now it may have already been that way, and I just didn't notice. Finally figured out the track bar was bent and centered the axle by installing a new factory bar. I thought they should have jacked it up under the frame rails, but have been told that many shops do lift under the pumpkin, however, since the left bar mount is on the frame and other on the axle, it seems to me the bar could get kinked on the curved part of the bar by the weight on the end of the axle.
if you're going to do stuff with tires you don't want to jack from the frame. way more work than is needed. jacking from the control arm mount or pumpkin is perfectly fine for that.

the factory track bar is 1" solid and unless it's significantly screwed up, it's not going to bend from the weight of the axle. It's under a whole lot more stress than that when you drive around a corner or steer your tires.
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Old 09-15-2013, 03:19 PM   #5
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if you're going to do stuff with tires you don't want to jack from the frame. way more work than is needed. jacking from the control arm mount or pumpkin is perfectly fine for that.

the factory track bar is 1" solid and unless it's significantly screwed up, it's not going to bend from the weight of the axle. It's under a whole lot more stress than that when you drive around a corner or steer your tires.
That's good cause they're my regular tire/wheel shop - thanks guy!
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Old 09-15-2013, 04:31 PM   #6
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I tried the pumpkin, but it was too off centered, only one tire left the ground. My floor jack is small though, maybe a bigger one would have worked.
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Old 09-15-2013, 05:47 PM   #7
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I tried the pumpkin, but it was too off centered, only one tire left the ground. My floor jack is small though, maybe a bigger one would have worked.
Aha, now I see what Unlimited meant by lifting at the center of the axle tube - that would be just to the side of the pumpkin. Yeah now that you mention your small floor jack, I remember the shop had one of those big ones, and as I recall, it was under the diff, not off to the side.
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Old 09-15-2013, 07:43 PM   #8
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So is it OK to jack on the axle tube? I aways jack under the pumpkin but under the tube in the centre would be easyier.
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Old 09-15-2013, 07:55 PM   #9
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So is it OK to jack on the axle tube? I aways jack under the pumpkin but under the tube in the centre would be easyier.
I've been doing this methood using a piece of 4x4 wood block for years and never had an issue. I always place it by the side of the pumpkin center of axle.

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