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Unread 11-25-2014, 03:56 PM   #1
Dmarkowski
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Mysterious leak from rear axle tube

Hi everyone. I just noticed that there is a mysterious leak apparently coming from the axle tube on the drivers side of my dana 44 rear axle. I know it isn't a seal because they are closer to the wheel and not near the pumpkin. I recently changed the gear oil. I used RTV to seal the pumpkin back up and it does't appear to be leaking from there. I double checked to make sure I didn't overfill the pumpkin as it is tilted up slightly. If anything there isn't enough gear oil in there. It isn't brake fluid either because I smelled it and it has a greenish tint. Definitely gear oil. If it is leaking from the tube. what does that mean and what should I do??? I heard of people welding the tube but why yis it leaking in the first place??

Here are a couple pictures. Notice the axle is dry near drums so not an axle seal. Also the passenger side is dry. The picture is of the drivers side back and front of the axle. Ohh this is important as well. The gear oil is on the stabilizer bar and on the front of the gas tank too like it is spraying out from somewhere! I put it on jackstands, put it in gear and everything looked fine and it wasn't leaking.. What the heck right????

img_0277.jpg   img_0276.jpg  
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Unread 11-25-2014, 04:03 PM   #2
Dmarkowski
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More pics

Picture showing the axle seal is good and the pumpkin
img_0279.jpg   img_0278.jpg  
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Unread 11-25-2014, 04:26 PM   #3
Jeepsr4me
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looks like brake fluid./ But if its not, check the vent tube hose for a clog. Cause that is a vent tube attached to the brake block
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Unread 11-25-2014, 04:29 PM   #4
Dmarkowski
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Yeah wouldn't that vent tube have brake fluid in it? I'm 99% sure its gear oil. It smells like gear oil and it has the green tint of the gear oil I use
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Unread 11-25-2014, 04:38 PM   #5
irnmadn88
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Stock cover. Is the fill plug possibly over tightened?

Didn't you just post another thread about some rear end noise?


Could this and that be related? As in locker not fully disengaging?

As in your differential is getting hot and therefore pressurizing forcing the gear oil out the breather tube?
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Unread 11-25-2014, 05:18 PM   #6
Jeepsr4me
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take the hose off the brake block and blow thru it. When the rear pressurizes from heat build up the small amount of oil that coats everything will be forced out.
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Unread 11-25-2014, 05:34 PM   #7
Dmarkowski
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Yes I did post something before but the slight vibration issue was prior to this leak. I.E. the differential was not leaking before. It was completely dry and having the slight vibration issue.

I just took the breather tube out and blew it out with air. It was good so I bought a hose clamp thinking maybe it just wasn't clamped tight enough.

Taking the girlfriend to the airport now. I'll let you all know if it still leaks or not.
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Unread 11-25-2014, 05:35 PM   #8
Dmarkowski
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P.S. you can overtighten the fill plug????
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Unread 11-25-2014, 05:41 PM   #9
irnmadn88
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Quote:
Originally Posted by Dmarkowski View Post
P.S. you can overtighten the fill plug????
Well, if it has threads...



Yes. Yes, you can.
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Unread 11-25-2014, 06:06 PM   #10
Jeepsr4me
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Quote:
Originally Posted by irnmadn88 View Post
Stock cover. Is the fill plug possibly over tightened?
That in no way shape or form would cause a leak ELSEWHERE in the axle...
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Unread 11-25-2014, 06:35 PM   #11
irnmadn88
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Quote:
Originally Posted by Jeepsr4me View Post
That in no way shape or form would cause a leak ELSEWHERE in the axle...
True. By itself.

But if it were seated against the carrier?
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Unread 11-25-2014, 06:45 PM   #12
Jeepsr4me
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Quote:
Originally Posted by irnmadn88 View Post
True. By itself.

But if it were seated against the carrier?
ever had a 44 cover off? the plug would need to be a LOT longer to touch the carrier. And if it did touch it would take just one wach before the cover self clearances.
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Unread 11-25-2014, 07:03 PM   #13
Dmarkowski
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Just got back and it is still leaking! :////// I gotta get this figured out! The way I see it there are only two possibilities. 1. The diff cover is leaking somewhere (I find this highly unlikely. 2. The tubes are leaking where they go into the pumpkin........ They gotta be leaking from the tubes but how, why, and what does that mean???
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Unread 11-25-2014, 07:22 PM   #14
pcoplin
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How much oil did you put in there?
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Unread 11-25-2014, 07:23 PM   #15
Dmarkowski
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just enough to get to the fill plug
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