Track Bar Bolt - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 10 Old 04-24-2014, 11:24 AM Thread Starter
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Track Bar Bolt

Does anyone know if the front track bar bolt has been changed from the factory at any point, so we don't have to waste our time and money replacing it?

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post #2 of 10 Old 04-24-2014, 01:11 PM
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Do you have a picture of your bolt? Are you trying to figure out if yours will be warranty?
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post #3 of 10 Old 04-24-2014, 01:16 PM Thread Starter
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Do you have a picture of your bolt? Are you trying to figure out if yours will be warranty?
Mine has been replaced, but I'm trying to find out if Jeep ever addressed the problem of a 14mm bolt in a 9/16 hole for a friend and relative.

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post #4 of 10 Old 04-24-2014, 01:33 PM
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Still a little lost. Were they supposed to put a larger bolt in? If so just take it out and measure it. If there is something specific that was supposed to be changed look for that. Otherwise unless you know what their old one looked like how do you expect to know if it was changed?
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post #5 of 10 Old 04-24-2014, 01:52 PM Thread Starter
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Quote:
Originally Posted by ajpboss90 View Post
Still a little lost. Were they supposed to put a larger bolt in? If so just take it out and measure it. If there is something specific that was supposed to be changed look for that. Otherwise unless you know what their old one looked like how do you expect to know if it was changed?
They used a bolt that is too small for the hole, which lead to ovalling of the upper track bar bracket hole, that lead to death wobble. The "cure" is replacing the stock 14mm bolt with a 9/16 bolt, before any damage could be done.

My question is has Jeep started using the correct size bolt or made the hole and bushing the correct size for the smaller hole at any point? If not I will advise them to replace the bolt with the 9/16 bolt.

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post #6 of 10 Old 04-24-2014, 01:56 PM
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I believe they still use a 14mm bolt. I have heard of this before and i have never heard of the dealership replacing with a larger bolt but rather the whole set up and tightening the original style bolt. (tightened correctly it should not have a problem) from what i hear.
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post #7 of 10 Old 04-24-2014, 02:28 PM
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Quote:
Originally Posted by ASSFROW View Post
They used a bolt that is too small for the hole, which lead to ovalling of the upper track bar bracket hole, that lead to death wobble. The "cure" is replacing the stock 14mm bolt with a 9/16 bolt, before any damage could be done.

My question is has Jeep started using the correct size bolt or made the hole and bushing the correct size for the smaller hole at any point? If not I will advise them to replace the bolt with the 9/16 bolt.
My very late production 2013 has the crap 14mm bolts. Unless they did it in the 2014s they answer is no.
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post #8 of 10 Old 04-24-2014, 02:29 PM
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FWIW, my 2013 came with a 14mm axle side bolt, but they changed something on the upper/frame side, and it's different than my old 2007 JK.

_
'76 CJ-7, '43 CJ-2a, '78 Bronco,'78 CJ-7, '75 CJ-5, '78 CJ-7, '80 CJ-7, '78 SJ, '79 SJ, '78 and a '76 FJ-40 , '90 XJ, '91 XJ, '86 CJ-7, '95 ZJ, '68 CJ-101 Commando, '00 TJ, '68 M-715, 2 '86 Military Blazers, '96 LR Discovery, '86 CJ-7, '91 YJ, '99 TJ, 07' JKU Rubi, 1988 YJ, 1973 Commando, 3 Diesel Excursions....
Now back to a 2013 JKU Rubicon with "stuff", planning 37's with minimal lift.

I've tried them all... Jeeps are still the best. (0||||0)
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post #9 of 10 Old 04-25-2014, 06:52 AM
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2007-2010 I believe used a 14mm in a track bar bushing and bracket hole that needs a 9/16" on both ends. 2011-current still use the 14mm but the factory track bar now has a kind of bearing on the frame end that will only fit a 14mm, although the bracket is still drilled for a 9/16". Solution for me was 1/2" flat weld washers burned onto the frame bracket for using the factory track bar and longer 14mm bolt.

BTW Northridge 4x4 sells a 9/16" grade 8 fine thread hardware kit with stover top lock nuts for all your lowers and track bars for $44 or something, cheaper than I could put it together myself. I recommend it.

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post #10 of 10 Old 04-26-2014, 12:33 PM
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The 14mm bolts are fully threaded, rather than being shouldered. The threads act like a rat tail file on the bracket holes and egg them out. Synergy has a bolt conversion kit as well. I repaced all the lower ones and the track bars F&R with 9/16" from the local Ace Hardware. Done.

Also helps on the front axle side lowers and rear axle side uppers to install some "cam bolt eliminators" as sold by Teraflex & Synergy. These stop the bracket holes from wallowing out.

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