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JK Drop Pitman Arm Needed

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Old Jan 10, 2008 | 01:41 PM
  #41  
40yrofjpn's Avatar
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From: Montrose, Co
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Back to the bumpsteer discussion (before it got hijacked) The key is to maintain the tracbar to steering arm relationship (must be parellel) two ways to fix. If the lift uses a elevated axel mount to reuse the original tracbar the bar will no longer be parellel and even a 2 inch BB will cause a little bumpsteer
(especially when one wheel dips or rises on one side only) The best fix is to install a ADJUSTABLE tracbar using the original axle bracket. (throw out the supplied raised bracket) The other fix is to use a dropped pitman arm as discussed in this thread.
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Old Jan 10, 2008 | 04:34 PM
  #42  
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So what your saying is I don't need an adjustable front track bar and the track bar bracket.

I just started experiencing the death wobble. Probably about 7 -8 times now. Is my broken weld on the existing track bar bracket the result or the cause of my death wobble. (I do have the SKy Jacker bracket on the front)

My Currie front bracket cam in today. I thought the additional welding would help with strength. Based on an other conversations about death wobble I was going to install both.

I'll be one to say the factory weld on the original bracket was not hot enough to penetrate the axle housing as was needed.

Any advice?
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Old Jan 12, 2008 | 03:01 PM
  #43  
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Ok, well Paul I was attempting to address the pitman arm question, death wobbles are usually caused by mis-alignment issues. What I am saying is the tracbar locates the front axle, upon raising the end attached to the frame (via the 4"lift) the tracbar will be to short to maintain the same location. Usually the lift kit will include a raised braket to maintain the same locating point as the original. BUT this causes the steering arm to no longer be parallel with the tracbar, so upon the axle moving up or down and the steering bar having a different swing radius than the tracbar will cause the steering bar to move horizontatly hense "bump steer. "
So what I am saying is if the lift kit supplied raised tracbar bracket is not installed, and instead a adjustable tracbar is used and adjusted to fit the original axle locating braket, the parallel relationship to the steering arm is maintained and bumpsteer is not a issue. This issue is why adjustable tracbars
are available. Sinse adjusting the steering arm to re-center the steering wheel corrects the steering arm being shortnend, a dropped pitman arm is not needed.
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Old Jan 12, 2008 | 04:57 PM
  #44  
Paul Pemberton's Avatar
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From: Central Alabama
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OK So. Keep It Simple For Me.
1) 4"DPA Already Installed Leave It or Remove It
2) Currie front Bracket (Just Recived) Install It or Not
3) Full Traction Front Adjustable Track Bar (Just Received) Install or Not

The bottom existing track bar bracket weld has cracked as a result or the culprit of my death wobble(s)(s)(s)..

Please Advise.
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Old Jan 13, 2008 | 02:07 AM
  #45  
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From: vernal utah
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Originally Posted by wayoflife
Hey Paul, have you checked to make sure your caster is on? With a 4" lift, this will have changed enough to be a problem and wandering all over the road is usually a good indicator of an improper caster angle.
I believe this is so true.
Wayoflife, does the adjustable tbar have to be parallel with anything? And do we need a drop pit?
I have so many issues now, I dont know where to start along with many on here.
My DW broke off the tbar mount, I think, due to the strain, caused a ball joint to loosen up too.
Its like chasing your tail around.
If I was to start over, and I will, even if I get a new Jeep, I would go with an advanced lift with all the parts needed to fine tune the suspention. messing with a bb is a headach.
Paul, now that you are getting one piece at a time sorta, you should have purchased a full lift and dialed that puppy in, youll be chasing your tail too, just my opinion.....
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Old Jan 13, 2008 | 11:29 AM
  #46  
Rubimon's Avatar
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From: So. Cal.
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Originally Posted by Paul Pemberton
OK So. Keep It Simple For Me.
1) 4"DPA Already Installed Leave It or Remove It
2) Currie front Bracket (Just Recived) Install It or Not
3) Full Traction Front Adjustable Track Bar (Just Received) Install or Not

The bottom existing track bar bracket weld has cracked as a result or the culprit of my death wobble(s)(s)(s)..

Please Advise.
Paul,

Your track bar and steering drag link should be parallel. So if you put a drop pitman arm on the drag link, you should also drop the the track bar with a bracket on the same end (frame side) If you are running one without the other you will probably be experiencing bump steer and wandering issues.

If your track bar bracket weld is busted, dont drive it! If it breaks all the way, and it will, your jeep will go where it wants to.(no steering) Get it welded and have them gusset some reinforcements on it at the same time. With an adj track bar, the axle end of the track bar should have no bracket on it. Other wise you still wont have the drag link and track bar parallel. Were you running the drop pitman arm and an axle mounted track bar relocation bracket? If so you just compounded your steering issues.

I know this thread is old, did you ever add the adj control arms? Both uppers and lowers will help with the caster.
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Old Jan 13, 2008 | 06:04 PM
  #47  
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Not wanting to wait any longer on a lift I selected one of the first ones available. My advise to everyone else would be to purchase a kit with all of the components.

I did purchase the adjsutable uppers and had my caster dialed in around 7.5 degrees. I quess I need to remove the 4"DPA and install the adjustable track bar after I weld & reinforce the front track bar bracket

I have had zero problems with my ESP after the DPA was installed. Maybe it
was just a coincidence that I had it installed and then took the time to really dial in the steering wheel. Bummer.
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