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Old 12-04-2012, 08:54 PM   #1
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Front Axle Won't Recenter

I ran the stock TB on ~4" of lift for a while with Rokmen upper/lowers, my axle was very off center during this time (1-2 inches?). A few weeks back I installed the Currie TJS trackbar and it was a pain to get the axle centered but with a second hand I was able to shift the frame by using the steering wheel but it wasn't perfect. I decided to give it a retry this week

For some reason the front of the jeep will not recenter. I've tried jumping up and down on my bumper, jostling the hell of the body back and forth and ratchet strapping it one way but it pulls back once released. The frame is 1-1.5" too far on the passenger side (just like it was with the stock tb installed)

I've also disconnected front/rear swaybar, disconnect 1 upper front/rear and even loosened my LCA bolts. Could running the stock TB have damaged the JJs or clevite bushings (axle side uppers only)? Any ideas?

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Old 12-04-2012, 09:00 PM   #2
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When I did mine I had to pull an upper arm off all the way in order to center it, mine were binding up and it wouldn't allow the axle to shift over enough.

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Old 12-04-2012, 09:21 PM   #3
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I tried removing 1 upper in the front/rear but it didn't help. I should mention that I failed to do that when installing the control arms with original tb and the currie tb originally. I made both uppers the same length and "made them fit"
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Old 12-04-2012, 09:24 PM   #4
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What kind of control arms are you running?
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Old 12-04-2012, 09:36 PM   #5
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Rokmen lowers and uppers, all JJ ends minus the front axle side uppers
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Old 12-04-2012, 09:41 PM   #6
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Just like mine then. Follow these instruction that were given to me to set your arms up so they are not in a bind. It's what I used and it worked for me.

The single best way to set the uppers is to use a floor jack with the weight on the axle and raise or lower the pinion until it is correct. Then use ONE upper and adjust the length until the bolts slide in at both ends.

Release the floor jack and check the angle, if it is still good, use the jack again and raise or lower the pinion until you can spin the loose bolts in the first arm with your fingers which lets you know you have zero preload.

Adjust the second arm so you can get the bolts in and it also has zero preload.

Tighten up the bolts and you're good to go.

That is the only method I have found that ensures you have no uneven preload on the arms which causes them to fight each other and wear more than they should.


There is no set angle for the pinion. Set it slighly low and raise as needed to eliminate All vibes.

As far as the angle finder goes, put it in the trash where it belongs.

Ignore the parts about pinion angle if it doesn't apply to you after you have the arms set the trackbar should be able to be easily aligned to center the axle.
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Old 12-04-2012, 10:32 PM   #7
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If you are certain your UCA's and LCA's are correctly adjusted, use a ratchet strap.....

Let the Jeep rest with static weight on wheels....

Place a ratchet from pass side frame to driver side axle... or vice versa to center the axle ( which ever way you need to pull) LEAVE IT SLIGHTLY LOOSE

Remove the track bar.....

Ratchet until you are center... and you are SURE you are center.... install the the track bar and adjust until you have it installed with no load on the axle side track bar bolt.

Torque the track bar to specs and release the ratchet strap.
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Old 12-04-2012, 10:39 PM   #8
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You don't want to set the axle if the JJ's are in a bind it will make them fight each other and wear them faster than they should.
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Old 12-05-2012, 06:13 AM   #9
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Quote:
Originally Posted by DevilDogDoc View Post
You don't want to set the axle if the JJ's are in a bind it will make them fight each other and wear them faster than they should.
I agree 110%... JJ from one end to the other should be aligned ( or neutral position ) within the mounts.
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Old 12-05-2012, 06:27 AM   #10
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The JJs arent in a bind and like I said one upper is disconnected. There's so much pressure behind that pull that a ratchet strap ends up compressing the springs quite a bit when pulling the axle/frame over
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Old 12-05-2012, 07:29 AM   #11
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Swaybar is disconnected right? Something's not right. Should be able to sway the body on just the springs with no sway and TB. Hmmmm. Are the jj's free? Nothing stuck or rusted? Are they new?
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Old 12-05-2012, 07:30 AM   #12
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You're overthinking this. Pull one upper off the axle, determine how long the track bar needs to be and set it there, have someone turn the steering wheel while you're up front and once the holes are aligned, slide the bolts through. Measure to verify and adjust again if need be. Adjust disconnected upper to fit so that the bolt slides through. Tighten things down, done.

Nothing is injured due to using the stock front track bar.

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