TJ rear axle leak - JeepForum.com
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post #1 of 24 Old 07-04-2020, 08:24 AM Thread Starter
tropicalwj
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TJ rear axle leak

Hi everyone, the rear axle on my TJ is leaking. Attached a picture. Going to ask a mechanic to fix. Is it a hard job? Is it ok to drive it 30 miles to the mechanic?
Really appreciate your knowledge!

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20200703_081019_1593872698641.jpg  
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post #2 of 24 Old 07-04-2020, 08:39 AM
bobjp
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It is ok to drive it so long as it hasn't lost a lot of oil. Pull the plug and see how high it is. It is the pinion seal that has failed, and it is not that difficult to fix.

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post #3 of 24 Old 07-04-2020, 10:33 AM
TheBoogieman
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What axle is that? Cover and bolts look strange.

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Originally Posted by jeepinmichguy_ View Post
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post #4 of 24 Old 07-04-2020, 10:35 AM
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Quote:
Originally Posted by bobjp View Post
It is ok to drive it so long as it hasn't lost a lot of oil. Pull the plug and see how high it is. It is the pinion seal that has failed, and it is not that difficult to fix.
Are you sure? My limited eyesight didn't see the drip down to the diff cover. I was thinking the strange cover itself.

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Originally Posted by jeepinmichguy_ View Post
TheBoogieman is a jerk.
GOT IT BACK 6/17. 03' Rubicon/Zone 4.25" combo lift with 4" lift coils up front/Zone hydro shocks/5.13 gears/35" Mickey Thompson MTZ P3 tires/Black Magic brakes. Jeep #17 & 19.
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post #5 of 24 Old 07-04-2020, 10:44 AM
bobjp
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Maybe it is just the cover. The bottom of the housing looks kind of wet to me, and it seems to be the more common leak point.
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post #6 of 24 Old 07-04-2020, 11:22 AM Thread Starter
tropicalwj
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Thanks guys! Some more pics attached. Is the diff cover weird? Any more thoughts on the cause and fix? This is the rear axle. Thanks!
Attached Thumbnails
20200704_130633_1593883166932.jpg   20200704_130706_1593883212303.jpg   20200704_130748_1593883329227.jpg   20200704_130816_1593883354536.jpg   20200704_130859_1593883382285.jpg  

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post #7 of 24 Old 07-04-2020, 11:38 AM
Jerry Bransford
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That leak looks more like it's coming from the cover not the pinion seal. That's not a difficult job to reseal it, you don't even need a gasket. Mopar RTV, Permatex Gear Oil RTV, or Permatex Ultra-Black RTV (in that order) are good ways to seal it. Some like the Lubelocker gasket but I have mixed feelings with them after several uses of them over the years.

I would however replace those allen-head bolts with standard 5/16x18x9/16 hex-head bolts. The allen-heads have a nasty habit of stripping out since those bolts aren't very high quality.
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post #8 of 24 Old 07-04-2020, 12:20 PM Thread Starter
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Thanks!
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post #9 of 24 Old 07-04-2020, 12:30 PM
2jhanna
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And if you don't do offloads or play in the rocks, I'd ditch the rear cover shield.

oh, and D44, which I find odd with those wheels/tires. normally I would think if the factory installed a d44, you'd get the 30" tire/wheel package. unless diff was swapped out.

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post #10 of 24 Old 07-04-2020, 06:14 PM
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Quote:
Originally Posted by 2jhanna View Post
And if you don't do offloads or play in the rocks, I'd ditch the rear cover shield.

oh, and D44, which I find odd with those wheels/tires. normally I would think if the factory installed a d44, you'd get the 30" tire/wheel package. unless diff was swapped out.
It's a 30 it has drum brakes. I seem to remember reading some place the Sport was given a 44 in some cases. It's considered a base Jeep though. Pretty sure though that all 44's had disc brakes...right?

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post #11 of 24 Old 07-04-2020, 06:23 PM
bobjp
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The early TJ's had the D44 as an option and they had drum brakes.
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post #12 of 24 Old 07-04-2020, 06:43 PM
2jhanna
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Quote:
Originally Posted by WallyDog1 View Post
It's a 30 it has drum brakes. I seem to remember reading some place the Sport was given a 44 in some cases. It's considered a base Jeep though. Pretty sure though that all 44's had disc brakes...right?
the diff picture with the leak, is in the rear. It should either be a 35 or 44. based on its shape and fill plug, its a 44.

and yes, many rear 44s did come with drum brakes, including mine.

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post #13 of 24 Old 07-04-2020, 07:10 PM
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Quote:
Originally Posted by 2jhanna View Post
oh, and D44, which I find odd with those wheels/tires. normally I would think if the factory installed a d44, you'd get the 30" tire/wheel package. unless diff was swapped out.
The Jeep in question is RHD. A fuzzy memory that comes to mind was that all models of RHD TJ, at least those in the European market, had the rear D44 fitted.

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post #14 of 24 Old 07-04-2020, 07:19 PM
2jhanna
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Quote:
Originally Posted by mukluk View Post
The Jeep in question is RHD. A fuzzy memory that comes to mind was that all models of RHD TJ, at least those in the European market, had the rear D44 fitted.
Good catch on the RHD, I didn't pick up on that.

And, yep, that probably does explain my being odd comment.

I am multi-talented, I can talk and piss you off at the same time.

jhanna
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post #15 of 24 Old 07-04-2020, 08:50 PM
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I didn't catch the RHD at first either, then the track bar bracket immediately right of the differential caught my eye.

Also seems a bit odd to me to see a full set of adjustable control arms fitted to a Jeep with a stock slip yoke driveshaft and sitting at or near to stock ride height.

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