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Old 10-13-2018, 06:51 AM
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Clunking sound when turning right + fluid leaking

Hi there,

Relatively new poster to WF, so be gentle please

Have a '14 Wrangler JK Sahara, with a Rancho 2" Sport Lift and Synergy fixed LCA to correct caster. Bumpstopped 2" front, and 1" rear to accomodate running slightly larger than stock tires (285/75R17).

Over the last couple months, I have noticed a knocking sound when turning right at speed. I can feel it clunking 2-3 times a second especially on my left foot through the firewall, and immediately ceases once the wheel goes back to neutral. Does not happen when turning left, does not happen when stationary, and usually at about 25-30+. I can not find any evidence of rubbing of tire on fender liner. I have also noticed a small but consistent amount of fluid from somewhere (circled on picture). No idea if it is related.

Before starting to rip or replace anything, do folks here have any thoughts where to start focusing my investigations ??

Thanks !!

Steve

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Old 10-13-2018, 08:34 AM   #2
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Looks like the axel shaft seal is leaking. Don't know about the clunking but could be a bad u joint.
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Old 10-13-2018, 11:31 AM   #3
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I'd start by going to Planmans youtube video on diagnosing death wobble. Although you don't have that its a good tutorial on how to look for loose bolts on tie rods, drag links, etc. I would also check those ball joints and make sure you don't have excessive play. Again watch a youtube video for how to check that. Its all pretty easy and will only take you about 15 minutes.

If all those check out I'd take a torque wrench to all the control arms to make sure they are torqued to spec.
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Old 10-13-2018, 11:42 AM   #4
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Sounds like the same issue i had. I had to replace my seal at 60k and i also had some noise from worn out bushings
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Old 10-13-2018, 08:43 PM   #5
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First off your axle UJoint is shot, noise, vibration, and that took out your axle seal. Axle seal is a pretty big job. Diff carrier has to come out to change the seal.


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Old 10-13-2018, 11:12 PM   #6
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I have had that noise and so my first suspect is what mine was; axle U-joint. Easy check:


Jack up wheel & remove it.
Wrap hand around U joint.
Turn hub back & forth a bit by hand & feel for movement between the yokes of the U joint.
Any movement -> stuffed U joint.
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Old 10-14-2018, 09:51 AM   #7
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Blinker fluid low?

Ha, sorry, couldn't resist
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Old 10-14-2018, 03:27 PM
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Quick update - looks like driver's front u-joint. It does wiggle a fair amount, almost like it is flexing when there is stress put on the the hub.

I THINK the U Joint and axle seal may be covered under the 5yr/100k powertrain warranty, so bringing it into the dealer on Tuesday to have them look at it. Fingers crossed, as I only have 53k on it, but it is closing in on the 5 years.

The other option I have is that I have set up a regear to 4.56, but recommended Jeep OR shop (not a dealer, and about an hour away) cannot get me in until last week of November. This is not my daily driver, so I guess I could park it for 5-6 weeks (ouch) and then bring it in there for them to throw on seals and U joint while they are regearing. It is not horrible option, should Jeep not honour the warranty...

Thanks everyone for their help - hopefully can repay the favour someday...
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Old 10-15-2018, 03:01 PM   #9
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Easy peezy,

check the videos on youtube, pull the right knuckle out. This will allow you to just pull the drive axles out of the differential assembly. Replace the whole axle. They are cheap and come assembled with the u joint and the seal. Shove the axle back onto the axle, just remember to dab some synthetic lube on the tip of the drive shaft gears so it slides onto the ring gear in the differential unit. Now all the oil that you have lost by seepage has to be replaced. So drop all the remaining oil from the differential. There is a oil drain bolt on the differential. Google the capacities of the differential oils. Open the fill bolt first before your drain the oil. Don't forget to use some Teflon plumbing tape on the threads. Fill it with fresh gear oil and you are good to go.

hope this helps.

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Old 10-15-2018, 03:03 PM   #10
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oh just was your regear post, then it just works. If you buying the parts just also supply the mechanic with the front drive axles and he might be able to slide those in for you.

If you are regearing, check your ball joints as well, cause the labor he will put in to slide the axles he might as well punch out the ball joints and replace them as well. I am sure your ball joints if still original are on their way out as well.

Sandan
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Old 10-15-2018, 03:09 PM   #11
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Quote:
Originally Posted by SanDan View Post
Easy peezy,

check the videos on youtube, pull the right knuckle out. This will allow you to just pull the drive axles out of the differential assembly. Replace the whole axle. They are cheap and come assembled with the u joint and the seal. Shove the axle back onto the axle, just remember to dab some synthetic lube on the tip of the drive shaft gears so it slides onto the ring gear in the differential unit. Now all the oil that you have lost by seepage has to be replaced. So drop all the remaining oil from the differential. There is a oil drain bolt on the differential. Google the capacities of the differential oils. Open the fill bolt first before your drain the oil. Don't forget to use some Teflon plumbing tape on the threads. Fill it with fresh gear oil and you are good to go.

hope this helps.

Sandan
The axle seal is installed in the diff housing, it is not assembled onto the axle then slid in. You have to remove the carrier to change the axle seal.
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Old 10-16-2018, 09:27 AM
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Just heard from dealer - all covered under warranty !! Both front u-joints, both front seals, and they are replacing the driveshaft too. The advisor said there was a service bulletin that pointed at the driveshaft for "clunks". Unfortunately, the dealer has said it may be a couple months before they can get the driveshaft due to manufacturing availability - the supplier went out of business and Jeep is trying to source a new manufacturer ?

Good call on the ball joints - will pick up some Spicers or the like and have them drop them in during the regear.

Fingers crossed this all works out, but looks like the stars may be aligning.

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