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Unread 07-22-2013, 03:42 PM   #1
TattooedXJ
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Join Date: Jul 2013
Location: Dublin, Ohio
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3" Rough Country Lift Kit issues

So I put a RC 3" lift kit on this weekend and on the way home I got the DEATH WOBBLE. I was told I needed to have an alignment. So I had one done and they told me the front tires are straight but on the alignment sheet they left the following comment "Rear springs not put in properly. To much Toe OUT on RR too much Toe IN LR. Would need realigned once rear axle is straightened".

Now when we installed the rear add-leafs we made sure everything went back in the exact same way and followws all the instructions VERY carefully. Also now between 40-50 if I hit a bump the death wobble returns....PLEASE HELP!

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Unread 07-23-2013, 01:20 PM   #2
sAe23
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Did you possibly forget to re-install the leaf spring centering pins??
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Unread 07-23-2013, 09:39 PM   #3
jeepjunkie97
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Maybe be driveshaft vibration, 3" over stock you'll get some vibrations, which could be fixed by a slip yoke eliminator. But if for sure it's a death wobble that's a different ball park
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Unread 07-23-2013, 09:41 PM   #4
ThatWhiteJeep
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Did you adjust your tie rod? And make track bar modifications?
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Unread 07-24-2013, 05:11 PM   #5
CJ7-Tim
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When installing the lift what did you do about the track bar ? Did you torque all the fastners correctly ? Did you install an adjustable track bar, re-drill the mounting hole, install a small bracket from the lift kit, or do nothing ?


The first steps to eliminate death wobble should be a visual inspection of each component, check the bushings, tire balance and an alignment. These are some common things you must check anytime you lift your Jeep. Death wobble is experienced mostly on lifter Jeeps, however it is not uncommon for someone without a lift to experience the dreaded DW. Listed below are a few things you can check.

Check your Track Bar, play in this can cause the axle to shake.
1. Bushings - check to see that they are not worn. Looks for cracks, and excessive play)
2. Angles - this angle should be the same as your draglink. Use an angle finders you can get at sears to determine this, don’t just eye-ball it.
3. Bolts Bolts – Make sure all bolts both at the axle end, and at the frame bracket, are tightened down to spec (some lift components have a different torque spec then)

Check the Axle, your mounts may be worn
1. Check the axle mount. Here is a good write up on a wallowed out bolt hole
http://www.jeepin.com/features/trackbarfix/index.asp
2. Check your Universal joints, a binding or lose U-Joint can cause DW
3. On the frame end if you still use the conventional Tie Rod End or (TRE) make sure that there is no play in this, as play can cause DW.
4. Look/Check for worn/torn boots on ball joints/tie-rod ends.

Check your Tires
1. Out of balance tires can cause shaking in the front end, which can lead to death wobble.
2. Make sure all of your lug nuts are tight, (Sounds elementary but it happens to the best of us)

Check your Frame
1. Small cracks in the frame can cause the steering box to feel loose, Shaking from DW can only make this worse. 33’s and larger should have some form of Steering box brace, or frame brace in.
2. If you have upgraded your frame mount, make sure its cranked down nice and tight. (best to use an impact gun)
3. A busted Frame Mount can cause play in the front end causing DW (Keep a watchful eye on the welds as welds in sheer can break over time.

Make sure you have a good alignment
1. After you get an alignment done, have them print out the numbers for you. An XJ should have a 7* positive caster angle. A lifted XJ can’t always have that high of a number because the pinion would become out of alignment with the front driveshaft. Pinion angle takes precedence over caster.
2. Make you sure you go to a place that will adjust the caster if necessary (either by shims in the frame side of the LCAs, or adjustable LCAs).

The more adjustable parts the easier it is to tune in your suspension.
1. Adjustable Track Bar
2. Adjustable Upper and Lower Control Arms (upper ones above 4” of lift). Not only are they adjustable, but they are stronger.


Things to remember:
1. After any lift, get your Jeep professionally aligned, this is a REQUIREMENT, not a suggestion.
2. A Steering Stabilizer (SS) is not a quick fix for DW.
3. Make sure that the lift you purchase comes with all the required parts for a safe driving vehicle. (as long as its going to be a DD)
4. PLEASE ALWAYS DRIVE WITH YOUR FRONT SWAY BAR CONNECTED!

DW is not usually caused by one single item on the list below, it occurs when a combination of weak, damaged, failed, or out of specification items on the list are present. Tire issues will only initiate DW, and are not the sole cause of DW.

Entire list of everything that can cause death wobble:

-Front alignment out of spec
-Loose track bar
-Worn track bar bushings
-Worn track bar end
-Needing an adjustable track bar
-Bad bushings/joints in control arms
-Worn/damaged steering stabilizer
-Worn/damaged shocks
-Worn/damaged tie rod end
-Bad U Joint
-Bad ball joint
-Loose frame side control arm or track bar mount
-Worn or damaged axle side mounting bracket
-Steering box looseness
-Bad front hub assembly


Torque specs:

Item ........................................ Ft. lbs. ................... Nm

Lug nuts (1/2 X 20 w/ 60* cone) .... 85-115 .............. 115-150
All tie rod ends .....................…..... 55 ...................….. 74
Steering (both ends) ..............…..... 55 ................….... 74
Shock absorber upper nut .............. 16 ................….... 22
Shock absorber lower nuts ............. 17 ................….... 23
UCA frame end .....................…...... 66 ..............…..... 89
UCA axle end .........................….... 55 ................….... 74
LCA frame end ......................…..... 85 ...................... 115
LCA axle end .........................….... 85 ...................... 115
Track bar frame end ..............…..... 60 .................…... 81
Track bar axle end .................….... 40 ..................…... 54
Track bar bracket bolts ..........…..... 92 ...................... 125
Track bar bracket nut .............….... 74 ....................... 100
Track bar bracket support bolts ...... 31 ....................... 42
Hub bolts (3) ............................…. 75 ....................... 102
Hub- axle bolt ..........................….. 175 ..................... 237
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