Pinion bearing and seal - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 10-06-2008, 06:20 AM   #1
Jeeper
 
Join Date: Sep 2008
Posts: 30
Pinion bearing and seal

Last night I heard a grinding noise coming from the rear axle on my 2000 TJ. When I got down to look I saw axle fluid sprayed all over the place. The differential was very hot. The Jeep would not move in first without clunking. I was able to see that when moving forward or backwards the yoke would move around. I got it home and haven't done any other checks yet. This axle has a rubber fill plug. I refilled the axle with fluid and was able to drive it onto the rollback with no noise.

After reading on the forum I'm thinking at a minimum the pinion bearing and seal are gone. I didn't see any evidence of leaking around the yoke though. But I can't find any other likely source for the leak. Is it likely that the axle gears are ruined also? I expect it was driven a while with just about no fluid.

I'd like to try to repair it myself if possible unless the gears are gone. I could sure use some advice from those who have gone through this before. I'm pretty sure I have every tool I'll need except a 250 ft lb torque wrench. I can probably borrow one of those. I do have a big a$$ impact wrench.

hank1 is offline   Quote Quick Reply
Old 10-06-2008, 07:10 AM   #2
Jeeper
 
Join Date: Sep 2008
Posts: 30
Thinking about it I should have ask if this is something that can be repaired at home. Thanks

hank1 is offline   Quote Quick Reply
Old 10-06-2008, 12:35 PM   #3
Jeeper
 
my98tj's Avatar
 
Join Date: Aug 2005
Location: Tullahoma, TN
Posts: 585
i have changed the pinion bearings and seal on my grand cherokee with the dana 35, and it wasn't that bad. from the sounds of it though, you probably ruined the rear end. the clunking doesn't sound like there's much left of the ring gear. i would open it up and take a look at the ring gear before you decide to tear in to it and fix it yourself. just my $0.02.
__________________
Can anyone tell me how the flux capacitor is used to facilitate time travel?
my98tj is offline   Quote Quick Reply
Old 10-06-2008, 02:49 PM   #4
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
sounds like the pinion nut could have come loose to. has anyone replaced the seal lately?

i'd say you can pull the cover and take a look before you do anything else. if the teeth on the gears are still there, and not sharpened or anything you'll be ok. if there's metal shavings the bearings are probably done. but the bearings are easier to replace than the ring and pinion.
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 10-06-2008, 03:31 PM   #5
Jeeper
 
Brewski's Avatar
 
Join Date: Mar 2008
Location: Burlington, KY
Posts: 289
Quote:
Originally Posted by jpdocdave View Post
sounds like the pinion nut could have come loose to. has anyone replaced the seal lately?

i'd say you can pull the cover and take a look before you do anything else. if the teeth on the gears are still there, and not sharpened or anything you'll be ok. if there's metal shavings the bearings are probably done. but the bearings are easier to replace than the ring and pinion.
to specify... over time you will accumulate a few metal shavings. it should be pretty common sensy to tell whether you have a few shavings, or you gears are totally shot to hell
__________________
-97 Sport, 5spd, D30/35, Zone 4.25 combo, 33x12.5x15 Hercules Trail Diggers on Pro Comp steelies
-[Stolen/Totaled]00 TJ Sport, 4.0L, 5spd, D30 - D44, 31x10.5 Dunlop Mud Rovers, 2" Skyjacker BB w/Hydro 7000 shocks
-Life is a journey, not a guided tour.
Brewski is offline   Quote Quick Reply
Old 10-06-2008, 04:06 PM   #6
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
if there's metal shavings it doesn't mean the gears are shot everytime, a failed bearing will give you metal shavings also. and ya, i was assuming we're using common sense when it comes to a very small amount of tiny shavings, or sparkly gear oil full of metal, especially considering what he's describing.
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 10-06-2008, 05:09 PM   #7
Jeeper
 
Join Date: Sep 2008
Posts: 30
Thanks for the input folks. A friend recommended I drop the driveshaft, replace the outer pinion bearing and retighten the pinion nut and drive on. I know my luck better than to think that would fix it though. So my feeling is I'll be better off to have the whole thing looked at by a mechanic I trust and have him professionally repair it. If I "fixed" the thing it might last 6 hours or six months and I need better than that.

hank1 is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler 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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
ford 8.8 elhuberto YJ General Discussion Forum 10 05-01-2014 07:08 AM
rear pinion seal Jma20a TJ Tech Forum 13 05-15-2008 10:30 PM
8.8 Facts, Opinions & How-to's (f.a.q.) Iquois General Jeep Discussion 2 06-15-2007 11:41 PM



Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 07:23 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC