I got the tool at O Reillys was like $30. Just go in and tell them what you are looking for. It it's the only way to get the nut of on a dana 80. I didn't need a puller. The hub came right off.
Is there 1 or 2 bearings that need to be changed ? The parts guy doesn't have the inner bearing, says they rarely give trouble. He has the outer bearing.
I got the seal, both bearings and a socket for the nut yesterday. I'll be finishing up my air ride suspension and fixing the seal issue over the next couple days.
The nut on passenger side was right handed. (Righty tighty, lefty loosey.)
It took 4 trips to the parts store (1 to Ford and 3 to another) to get the right seal. It looks like Ford gave me a front seal. The first trip to the parts store gave me a seal for an 11.25" axle. Then next trip found they were out of stock of the 10.5" seal, even though I called and they said they would have it. The 4th trip I got it.
Installation was easy. I didn't need a hub or bearing puller. I jacked the diff way up on the side I was working (let air out of the airbag) and didn't loose much diff fluid.
The brakes and rim were disgustingly dirty. Lots of scraping and cleaning to get them nice again.
I didn't replace the bearings. I inspected them and found all the rollers to be good and reinstalled the hub without the seal and checked for noises, etc. Everything seemed fine.
I think my seal just plain wore out. There was a lot of grit on the axle tube and the combination of grit and usage just wore away the rubber until it started leaking.
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