Need Some Guidance on a Leaking Hub - JeepForum.com
 
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post #1 of 4 Old 04-04-2020, 07:42 PM Thread Starter
NGAJeepguy
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2007 WK 
 
Join Date: Apr 2020
Posts: 13
Need Some Guidance on a Leaking Hub

Hello! I've purchased my first, and new-to-me, jeep. It's a 2007 Grand Cherokee 4.7L 4WD. It has 146k miles on it so the first thing I did was replace the hubs, rotors, calipers, brakes, shocks, and struts.


The problem I'm having is a leaking hub on the rear passenger side. I first noticed the leak Thursday and re-torqued the hub bolts. There was new fluid on Friday so this morning I tore it back down and looked for anything that might explain the leak. I couldn't find anything. The hub is a brand new Moog part from rockauto. The other 3 are fine. I've cleaned up the axle face so I know there's no unevenness of the mating surfaces.

From researching on the web I've seen a few people talk about replacing seals or O-rings but I can't figure out exactly what seal or O-ring I would replace. The install instructions don't mention needing to install seals nor does there appear to be anything missing from the part.

Any help is appreciated!


David

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post #2 of 4 Old 04-04-2020, 08:36 PM
Mainsail
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Join Date: Mar 2010
Location: Puget Sound
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David, there is an o-ring for the rear axle hub, it they will leak diff fluid if it's not there. I've replaced my right rear three times and it's still leaking, but back to you.

It's going to have to come back apart.
Attached Thumbnails
WKHub1.jpg   WKHub2.jpg  

Poor grammar is something up with which I shall not put.
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post #3 of 4 Old 04-05-2020, 08:44 AM Thread Starter
NGAJeepguy
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Ugh. Ok, thanks for your help! Have you ever considered a bit of liquid gasket with the ring or is there too much risk in it breaking off and getting in the gears?
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post #4 of 4 Old 04-05-2020, 09:08 AM
Mainsail
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Quote:
Originally Posted by NGAJeepguy View Post
Ugh. Ok, thanks for your help! Have you ever considered a bit of liquid gasket with the ring or is there too much risk in it breaking off and getting in the gears?
The next time I have it open I'm going to be looking for somewhere to run a thin bead of RTV on the dry side of the o-ring. I imagine it will be harder to get the thing apart if I do, but realistically it's a 2005 with 115K miles on the clock- how much longer will I be driving it?

Right now it's nothing more than a very slight seep. In the five or six years I've been dinking with this, the diff hasn't needed to be topped off even once.

Right now it's an annoyance- slight gear oil stink and it's hosing the parking brake shoes.

Poor grammar is something up with which I shall not put.
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