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Old 12-25-2011, 09:31 PM   #1
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Rear axle seal leak? or brakes?

Went out to my jeep and this today. I have a dana 35



The picture doesnt show it, but the tire is also covered in liquid. Its a greasy type of liquid, so my guess is that it is the axle seal leaking fluid. Is this correct? I suppose if it wasnt it would have to be the brakes?

I dont have alot of cash to play with, so I am hoping to do this repair myself. I dont know much about this area of the vehicle, but i do have all of daddy's tools to play with

I did alittle searching, and found this:
Axle seal change D35

Is this what Im looking at doing? Doesnt seem so bad.
Really looking to know:
1) if what i think the problem is, is actually the problem
2) is that link the way to fix it?
3) Do i have to worry about any other damage, like inside the axle, or brakes, etc

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Old 12-25-2011, 10:43 PM   #2
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Ive done alot of routine maintance on my jeep, as well as easy stuff such as exhaust and other small projects. I read on here alot about suspension and stuff, but dont know much about this aspect of jeeps, so i apoligize if this is really basic, or my questions are stupid or whatever...

Im assuming that my axle bearing would have to be repressed on after sliding the axle shaft out. Is this correct? Where can i get this done?

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Old 12-26-2011, 08:15 AM   #3
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Having just gone through this, it does look like a seal. The question is, did something cause the axle to leak? Could be normal wear or you have a bent axle shaft that caused it. Get it up on jack stands with the wheels off and safely start it up and put it in gear and observe the axle shaft in question. You may have to pull the drum to get a good look. Mine was bent and that is an entirely different ball game. You'll have to make some decisions on your next step. Because of your funds, it will be a tough call to make. Hopefully it is not bent.

Here's a couple of write ups.D-35 Axle Shaft Removal
D44 Axle Shaft Removal and Overhaul - 1. While the second link will show you how to remove the seal and bearing. Just call around and find a machine shop that presses on new bearings and seals and have them do it.
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Old 12-26-2011, 08:37 AM   #4
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Thanks for the reply. For purpose of conversation we'll hope my axle shaft isnt bent.

In my link, it looked like they replaced the seal just by sliding the shaft out, because the seal was left on the vehicle. However in your link changing the seal required cutting the bearing off the shaft. Are the links showing different seals?
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Old 12-26-2011, 08:53 AM   #5
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Quote:
Originally Posted by Briangr View Post
In my link, it looked like they replaced the seal just by sliding the shaft out, because the seal was left on the vehicle. However in your link changing the seal required cutting the bearing off the shaft.
A 35 axle is not the same as a 44 with regard to the bearing/seal configuration. Not much point in looking at instructions for an axle that you do not have.

In any case, sounds like you have the cart before the horse. You need to positively identify the source of the leak before you try to fix it. If the leak is brake fluid, it will "suds up" and wash clean with water. Gear oil will just bead up the water.
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Old 12-26-2011, 09:16 AM   #6
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Quote:
Originally Posted by tangofox007 View Post
A 35 axle is not the same as a 44 with regard to the bearing/seal configuration. Not much point in looking at instructions for an axle that you do not have.

In any case, sounds like you have the cart before the horse. You need to positively identify the source of the leak before you try to fix it. If the leak is brake fluid, it will "suds up" and wash clean with water. Gear oil will just bead up the water.
Very true. Im going outside to jack the jeep and take a look at it now, so ill know what it is soon. Im sure ill have more questions shortly
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Old 12-26-2011, 06:20 PM   #7
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Looks like the rear brake cylinder to me...both of mine went with 3 months of each other at around 115k. Have someone pump the brake while you look at the rear, you will know if it's leaking right there. Also check your master cylinder, if it's low that prob it.
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Old 12-26-2011, 06:26 PM   #8
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If your brake cylinder was leaking as badly as it appears to be, I'd expect the brake light on the dash to be on. That the brake light is not on, my guess is the axle seal is leaking and needs to be replaced.

Here is how to remove the D35 axle shafts so the seal can be replaced.

D-35 Axle Shaft Removal
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Old 12-26-2011, 07:34 PM   #9
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Quote:
Originally Posted by tangofox007 View Post
A 35 axle is not the same as a 44 with regard to the bearing/seal configuration. Not much point in looking at instructions for an axle that you do not have...
I did notice that we were running different axles and the first link that I provided was the same one that Jerry just provided which is for a Dana 35. I attempted to assist a fellow wheeler, one the run, and incorrectly assumed that the second link would provide additional information for him. My sincere apologies to the OP. In any event, I do hope that his fix is inexpensive and the issue is resolved quickly.
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Old 12-26-2011, 08:05 PM   #10
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Thanks guys, got a chance to look at it, and its the axle seal for sure. Couldnt run to NAPA today, but will tomorrow.
I noticed my brake pad/shoe on that drum is coated in the fluid leaking from the seal. Any issue here? Should i just replace it while im down there?
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Old 12-26-2011, 08:14 PM   #11
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yes, replace the brake shoes. everything esle can be cleaned with brake cleaner. Also repace the other side brake shoes too.
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Old 12-26-2011, 08:21 PM   #12
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Originally Posted by Sccafire View Post
yes, replace the brake shoes. everything esle can be cleaned with brake cleaner. Also repace the other side brake shoes too.
Sounds good. I figured Id have to...
Thanks
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Old 12-27-2011, 01:18 AM   #13
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Had a bent axle shaft blow that seal on my pos 35 and took lots of simple green to clean that tire off. GL and hope its not your shaft too
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Old 12-27-2011, 09:02 AM   #14
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My hope is that if the shaft was bent, id have some kind of vibration or other indicator other than the leaky seal, which i dont. Ill have to shaft out today to see

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