Front tires locked up - : Jeep Wrangler JK Forum
  • 1 Post By Nucleophile
  • 1 Post By j3ff3ry_j33p
LinkBack Thread Tools Display Modes
post #1 of 6 Old 05-27-2018, 10:51 PM Thread Starter
Join Date: Sep 2015
Posts: 12
Feedback: 0 reviews
Front tires locked up

2008 Jeep Rubicon. Traveling down the freeway today. Front end locked up. Front tires skidded. Neither tire moved. Had to drag it onto the trailer. Right tire started turning towards the end. Smoke coming from pinion. Very little oil in differential when I pulled the cover. No loose metal that we could see. Metal around pinion area is off color. Jeep is at friends house right now. We haven't pulled anything apart yet. What should I look out for? Any chance anything can be saved? Anything I should upgrade while I'm in there? Thanks for the advice.
Bolphur is offline  
Sponsored Links
post #2 of 6 Old 05-29-2018, 05:51 AM
Gunnery Sergeant USMC (ret)
Uncle Sams Misguided Child's Avatar
Join Date: Dec 2010
Location: Tucson AZ
Age: 52
Posts: 21,882
Feedback: 8 reviews

Very little oil. That's your first clue. The second would be smoke.

You have probably heated the ring and pinion. So you should be looking at a minimum new ring and pinion and all new bearings and seals.

Originally Posted by lohchief View Post
If people don't take a stand now,you'll be bitches under their thumbs tomorrow.
Originally Posted by StubEXrube View Post
I think too much of a pressure variant between Earth and outer-space... lack of oxygen... something like that.
Uncle Sams Misguided Child is offline  
post #3 of 6 Old 05-29-2018, 03:49 PM
Join Date: Nov 2017
Posts: 52
Feedback: 0 reviews

Trying to wrap my head around this. Was the differential locked? I can see one wheel bearing locking up or the pinion bearing seizing and locking one wheel but having both wheels lock up at exactly the same time just doesn't sound right. Stranger things have happened and I dont mean to sound like I dont believe you.

Gear case lube doesn't evaporate so it was either never there or it leaked out. Leaking would have been obvious unless it happened on the trail and then it would have to be a hole in the case or you would at least see some drips on the ground when it sat.

Perhaps you have a locker that was locked and the lube was never there and if that was the case then you probably dont have much left to salvage.

It would probably be more cost effective to look for a replacement at a wrecking yard.
sschefer is offline  
Sponsored Links
post #4 of 6 Old 05-29-2018, 06:46 PM
Rock God
Nucleophile's Avatar
Join Date: Mar 2012
Posts: 821
Feedback: 2 reviews

Here is what happened. The pinion bearing essentially melted and welded itself to the race and/or the housing itself. The pinion likely was heated beyond a serviceable level, so I would not re-use it. The ring gear "might" be ok, but I would not risk it. The axle shafts are probably ok. The locker is most likely ok. The housing is shot. Don't even try to re-use the housing. The race did not break free from the housing hence why the wheels don't turn. Sometimes the race will break free from the housing and the wheels will once again "turn" (somewhat). Either way, the housing is toast.

Oh, and the bolts holding the diff cover on are probably still good.................
Nucleophile is offline  
post #5 of 6 Old 05-29-2018, 10:02 PM
Granite Guru
Rb6700's Avatar
Join Date: Feb 2017
Posts: 265
Feedback: 0 reviews

Sounds like your buying a junkyard unit or spending some coin on a Dana 44.

Sent from my SM-N910V using Tapatalk
Rb6700 is offline  
post #6 of 6 Old 05-30-2018, 04:29 AM
Super Moderator
j3ff3ry_j33p's Avatar
Join Date: Jul 2012
Location: Nashville
Posts: 5,647
Feedback: 0 reviews

not attempting any ‘ insult to injury’ by saying this but might help anyone else in future to say it’s important to check ALL lubrication fluids and grease points on these antiquated straight axle vehicles. Same goes for the suspension linkages grease points. I check differential fluids 4 times annually or after any inadvertent mud or water submersion. Too easy to check to risk damage such as OP. Don’t trust a service center to do so or at least watch them do it.
No offense, OP.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
j3ff3ry_j33p is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the : Jeep Wrangler JK Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome