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Old 08-03-2007, 01:30 PM   #1
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Leaky front axle

I noticed front axle oil leaking out the pass side end of the axle. I will get a shop manual (my next thread question) to answer these questions myself...but.... what holds the gear oil in? Is there a seal inside by the diff or outside by the U joints? How many "wrenchs" is this fix?

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Old 08-03-2007, 02:14 PM   #2
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Like you said, its just an axle tube seal. But there is one on the inside as well, near the differential. I'd pull the diff cover and inspect the inner one before attempting as you may need to replace both. But if its leaking out the end of the axle tube, you might be looking at replacing both.

If you don't feel confident enough to remove an axel, you might want to consider taking it to a shop.

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Old 08-03-2007, 02:25 PM   #3
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Like you said, its just an axle tube seal. But there is one on the inside as well, near the differential. I'd pull the diff cover and inspect the inner one before attempting as you may need to replace both. But if its leaking out the end of the axle tube, you might be looking at replacing both.

If you don't feel confident enough to remove an axel, you might want to consider taking it to a shop.
No shops for this cowboy unless I absolutely have to! This is what I enjoy doing!! I've done this on my land cruiser and F250, just wasn't sure how this baby is put together. So, to replace the inner seal, pull the axle and replace the inner seal from inside the diff?
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Old 08-03-2007, 03:05 PM   #4
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Yeah, doing everything like you'd be replacing an axle shaft. While your replacing the ones on the pass side, might as well do the driver since your in there.
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Old 08-03-2007, 04:48 PM   #5
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On TJ's there are no outer axle seals. The only one that you have to worry about is the inner seals.

And yes you do have to remove the shafts to do this, but you also have to remove the carrier at the same time so you can even get to the seals. Just make sure to keep track of the shims that come off and to mark the bearing caps so that you put them back on the exact side they came off of. Then you can pull the seals and replace them with relative ease.
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Old 08-03-2007, 04:51 PM   #6
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I thought they had outters... or is that part of the hub?
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Old 08-03-2007, 04:52 PM   #7
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X2, I thought there was one on the inner and one on the outter.
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Old 08-03-2007, 04:59 PM   #8
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I thought they had outters... or is that part of the hub?
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X2, I thought there was one on the inner and one on the outter.
Your stock shaft does have a plastic flange on it that sits on the outside of the tube, but there is technically no seal on outside of the tubes on the D30. The hub bearing bolts to the outside of the knuckle so it does nothing to seal the tubes.

Now on the disconnect 30's like in the older XJ's and YJ's, they did have a seal that was on either side of the shift fork housing.

Also Alloy USA makes an outer tube seal for the TJ's that is greasable, however I'm not a big fan of them because while it's not supposed to let anything in our out, anything that does get in there cannot get back out.
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Old 08-03-2007, 05:14 PM   #9
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well, I did end up replacing my outters with some of those types of seals. your right nothing in or out, but if its clean when they go on you should have nothing to worry about right?
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Old 08-03-2007, 11:11 PM   #10
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Thanks for all of the info.
I'm sure to have more ??? when I get around to doing this.

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