CavMedXJ

On a Dana 30 front axle, there is a small metal seal that sits behind a plastic dust cover.. I cannot find a name or a part number for this. Im puking out axle grease like crazy. HELP!

Turbo X_J

Might want to snap a pic, are you refering to the unit bearing? Front differential should have 90w & not grease.

CavMedXJ

Yeah I'll have to take a picture if I can get in there. And yes, it's 90w, just an expression on the grease part.

SeriousOffroad

Dana 30 seals are inside the diff. You must remove the axles and the carrier to replace them.

CavMedXJ

Ok, so you can see where it's leaking from. The black plastic piece thats easy to see is, as I understand it, a dust cover of sorts. The seal thats busted is directly behind that black plastic cover.

SeriousOffroad

As I stated before, the seals are inside the diff, not at the end of the axle tubes.

The black plastic piece is prevent larger pies of dirt/rocks from getting into the tube and damaging your axle shafts.

truckntractorhick

Yup inside..... basically tear apart the whole axle to get to em. It sucks ***

CavMedXJ

So, oil should only be present in the pumpkin? The rest of the axle shaft should be dry?

cazador

Yeah, just a plastic dust cover there, no seal. Mine leaks there too. On mine, after a couple of months the fluid drops to about a half inch below the fill hole, then it stops dripping and the fluid level stays the same for rest of the year.

CavMedXJ

I'm starting to get to that point. I would really like to fix it though. The biggest problem is that I'm getting water in my oil.

OleBlue

Yea if you wheel it at all, especially in any water, you will want to replace it asap or run the risk of grenading your gears. As stated above, the two axle seals in your dana 30 are one on each side of the inner axle tubes. Remove third member and axles to replace. Replace them both while you are at it.

CavMedXJ

Is it possible to fix these seals through the diff cover? For example, removing both wheel assemblies, axle shafts, and then resealing the axle through the pumpkin?

Turbo X_J

Instructions here:
http://jeep-xj.info/HowtoD30AxlesSeals.htm

CavMedXJ

Turbo XJ, Thanks! that's a really good post. On the page, it shows the job for the left side of the axle, is it the same process on the right? These may seem like dumb questions, but I'm trying to learn. I'm also getting confused because the mechanic that I typically go to told me that oil should move throughout the axle. coating the entire axle shaft. So, I'm getting pulled several directions.

SeriousOffroad

You need to find a mechanic that is familiar with 4x4 solid axles.