I have a 93 f350 with leaking rear axle. The job looks easier than some other bearing replacements but figuring out replacement parts needed is near impossible. I've id the axle as a sterling 10.25 full float 7400GAW and all parts diagrams and videos show 2 seals (inner and outer). Nobody know what parts. I've talked to all 3 parts stores plus ford dealer parts (worst). Searched All internet parts vendors. Read every related forum here and everywhere else. Best I can find is opinion for the inner seal (scotseal plus xl) among others, maybe. Part stores know nothing about outer and nobody else talks about it. If anyone knows what bearings and seals are a good fit please let me know. Also this diff has no fill hole, sure of it. My best guess is the ABS sensor.
Thanks for any and all info.
I replaced the rear wheel seals on my RV's Dana 70 (dually full floating) a year ago with $9/each Driveworks ones from Advance Auto. They were basically just rebranded WJB seals, very cheap from RockAuto (under $2/each) vs what paid from Advance but that's besides the point. They have been holding up fine for a year under a heavy load full time.
This is the "outer seal" on a full floater, it's called "axle flange gasket".
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How it looks (with RTV):
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Do make sure you use RTV on that flange gasket because the RH side on mine did start leaking after about a year without RTV, and I had to go back and do that. That's why the rim is so disgusting. The other side isn't leaking yet but I suspect it will eventually. I applied the RTV to the spindle first then stuck on the gasket, then applied RTV to the side you see in the photo.
The probably original 1985 bearings were still in excellent condition, so I just cleaned and regreased them. I made sure which bearing set went to which side so they got put back on the same sides they came from. I did the same for the front bearings since the inner seals were getting replaced too while I was replacing the rotors.
If wheel bearings don't look or feel bad, I personally see no point in replacing them.