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Old 06-30-2010, 12:38 AM   #1
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Exclamation bent front axle?

hey everyone! I need some help on this. I just bought a jeep. Everythings great but i noticed the font axle is bent! I have a crazy death wobble and im shure its the axle! I'd like to know what would be a possible replacement for this years axle?! ( I heard cherokees match but what years) And what is a possible cause for the bending?! The jeep has a 6" suspention lift .( If that effects the bending )

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Old 06-30-2010, 08:26 AM   #2
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where is it bent? can you post a picture of it? what year and sub-model is your jeep (ie: sport, x, sahara, rubicon, se)?

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Old 06-30-2010, 05:11 PM   #3
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It is a D30, they bend easily. A Cherokee D30 is a HP axle, so your gears will not work woth them. Just about any other same model D30 will work. TJ for TJ, YJ for YJ, XJ for XJ etc. They should be very plentiful in junk yards and Craigs list type places.
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Old 06-30-2010, 05:19 PM   #4
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they dont bend that easily. a pic would help
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Old 06-30-2010, 05:44 PM   #5
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jack up the axle you think is bent. stick it on jack stands. give it some gas and watch the tires for wobble. if they do...remove the entire wheel. watch the rotors now when you give it gas. still wobble? if so...you bent a shaft. no thing, just get some replacement ones.

another thing to try is look at your tires. does the tire look like this | as it should, or is it like this / or maybe like this \? that's a bent shaft too.

if you bent the tube things will be a little different. alot of bent housings will leak at the seals. inspect for any cracks in the welds. generally you don't just bend a tube either. damage is also done to a trackbar, control arm, etc. bent housing can be repaired with heat, and patience.

why are you so sure a bent axle is causing the DW?
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Old 06-30-2010, 07:42 PM   #6
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ya you can tell its bent by looking at the front of the jeep. and yes my tires are like / \ The treading is worn out only on the inside. Its a 97 jeep sahara 4.0
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Old 06-30-2010, 07:45 PM   #7
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they dont bend that easily.
I agree, the D30 doesn't bend THAT easily for most Jeepers. I'd not be so quick to suspect it is bent from merely having a bad case of Death Wobble. What leads you to believe the axle is bent and the DW is not being caused by one of the more common reasons for DW?
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Old 06-30-2010, 08:42 PM   #8
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ya you can tell its bent by looking at the front of the jeep. and yes my tires are like / \ The treading is worn out only on the inside. Its a 97 jeep sahara 4.0
I think you have some bad ball joints IMO.

usually bending or breaking a shaft is one of those things most people "know" happened. ball joints do go bad, they do cause DW, and they create the illusion of a bent or busted shaft.

I bet that's what your problem is.
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Old 07-01-2010, 10:35 AM   #9
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I have seen at least 20 bent D30/Rubi D44 housings from numerous people, and not all of them wheel hard. Out of ALL of the housings out there, I guess that is a VERY small percentage. But I still feel that is a lot of bent housings. Most people straighten and truss/inner tube them and truss the inner Cs. Some get new housings. Some say screw it, it is a trailer queen anyway. I know one guy who bent 3 separate D30 housings himself(and has blown up something in his D30s 6 times). Then he went to a Rubi D44 front end. I am betting he will have the same issues soon, since the tubes and deflection are the same. Guess it will be #8 that he finally wises up on? Nah, I doubt it. You gotta know this guy.

Heck, I bent a D30 housing, and maybe even my Rubi D44 housing too. My wheels looked like this when I sold it. |--o-\
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Old 07-01-2010, 10:54 AM   #10
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to answer question, cherokee hp d30 91 and up. I don't like the older stuff since some years has the CAD system. Air bends tubs. meaning drive fast, get the jeep off the ground and come down hard. large rocks tend to cause things to bend also. I would not waste money on that. older ford d44, bigger tubes, better bearings, and locking hubs.
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Old 07-01-2010, 12:18 PM   #11
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i like to see the bent axles. in my experiance with jeep speed, they either go boom and snap in half or the knuckles slowly bend inward towards the coils. Ive got a few thousand mojave desert miles of high speed dirt, tons of woop sections and big air and nothing is bent.... i prolly did more damage when i welded up a truss a couple months ago..
im not nice to the jeep
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Old 07-01-2010, 10:40 PM   #12
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would this fit? 3:73 gears for dana 30 and 35 out of 2003 wrangler
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Old 07-01-2010, 10:48 PM   #13
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3:73 gears for dana 30 and 35 out of 2003 wrangler
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Old 07-01-2010, 11:23 PM   #14
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Did the previous owner try to jump the Jeep? Doesn't take much to bend the front axle doing that kinda stuff. Maybe he was out at the dunes trying to catch air like one of the guys I know who bent his front axle that way.
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Old 07-02-2010, 12:04 AM   #15
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this happened on a mojave run this past year
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Old 07-02-2010, 11:46 AM   #16
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If he was just driving the Mojave trail when that happened, you can bet the actual cause of that breakage happened elsewhere prior to that trip. I'm not saying the D30 is unbendable/unbreakable but that kind of breakage is pretty damned rare unless it has been abused/jumped/etc.

I agree with Lance that upgrading to a front D44 like is in the front of a Rubicon wouldn't help since the Rubicon's front D44 is 75% Dana 30.
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Old 07-02-2010, 02:00 PM   #17
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Jerry do you mind explaining what parts are the same in the front d30 and front d44? I've got lots of buds that build the 30's and grab junkyard parts in case things snap and the lil guys hold good and strong. I like how their higher clearance as well but would like to learn more about them.
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Old 07-02-2010, 02:08 PM   #18
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Jerry do you mind explaining what parts are the same in the front d30 and front d44?
Where the Rubicon's front Dana 44 is concerned, the only parts of that axle that are pure Dana 44 are the ring & pinion gears, carrier, inner axle shaft, and center pumpkin housing. Everything else outboard of that is pure TJ Dana 30. That "everything else" includes the axle tubes, outer axle stub shafts, unit bearing hubs, u-joints, ball joints, steering, inner/outer C's, knuckles, and the brakes.
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Old 07-02-2010, 06:23 PM   #19
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yea when we do the mojave road, we are in washes and side trails most of the time. we are only on that actual road for a few miles. that breakage happened in a 3 to 4 foot wash out that the guy didnt see at 40mph. his axle was prolly pre cracked prior to that accident.

The fast group of our bunch best time is just over 5 hours from laughlin to barstow all dirt.

luckily in our chase group we had some big unimogs that can handle just about any recovery. I rigged up this tow setup to get him to laughlin lol
worked great




the tow truck driver said this was a first haha
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Old 07-03-2010, 02:39 PM   #20
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would this fit my jeep? 3:73 gears for dana 30 out of 2003 wrangler
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Old 07-03-2010, 02:54 PM   #21
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would this fit my jeep? 3:73 gears for dana 30 out of 2003 wrangler
They would but I would not install used ring & pinion gears. Used gears are much harder to set up properly and besides, the minor $$$ savings wouldn't really save you much when you consider the total cost of regearing including the labor.

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