I've been doing some seaching but haven't came up with much. My brothers 02 is leaking gear oil out the end of the PS tube. I've found that I need to get the hub vac O-rings from ford, but what about the axle?
Napa is telling me their is a seal on the inside of the tube near the pumpkin instead of just out near the U joint. The exploded diagram on powerstrokeshop doesn't show a seal anywhere. Thanks

 

The guzzles site does show the seal and talk about the outer one by the u joint. I would suppose that there will also be one by the pumpkin and that one would be more of the issue here. When replacing the ball joints the inner axle comes out with the u joints, and no lube with it, which would point to the seal by the pumpkin in your case.

 

Thanks for the reply. I couldn't find diagram, do you happen to have the link?

 

The inner seal for the gears must be installed after the differential is taken down. This would mean you probably need a rebuild on the differential. However there is a technique that I have not used for inserting a new seal from the end of the diff. tube.

This is a copy of what I found. I have NOT done this and don't know for sure if it will work. However here is the info. and I give credit to the author whom I don't remember who origionally posted it!

Front 4wd axle seal repair

Just fixed mine, The inner seal(2C3Z-3254-AA, $35.79) that's leaking sits on inside of axle tube. To replace it means that you need to pull pumpkin cover and take axle gear set out to get to seals(AS far as putting these gears back you need special tools & gages for correct thrust washer placings). The seals{dust covers} (F81Z-1S175-HCA, $19.92)that is on outside of axle tubes do not have a oil tight seal to axle tube. When you pull hubs apart you also need outer oil seal(F81Z-3254-AA, $31.03)+$10ea for your Ford dealer to fit them to axle,hub o-ring(F81Z-4A322-AA) and one auto hub o-ring kit(4C3Z-1K106-AA). NOW here's my fix. I replaced all above seals AND from Napa got oil seal(16146, $6.99) and installed it between stock 'dust cover' and axle tube. **This seal 16146 is a little too big to fit into axle tube hosing, but with some @!!%*^!! it WILL go in. What this do is when oil leaks past inner oil seal it will just lay in axle tube, instead of leaking to ground, and thus NOT draining fluid from axle, do top-up. You can do a side in a couple of hours with no special tools(other than a 2 5/16" wrench for lower ball joint and circlip pliers). I put synthetic oil in my axle??

 

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