Join Date: Aug 2016
Location: Idaho panhandle
Re: 2003 Dana 50 inner seal
I used a seal driver kit from harbor freight and a length of pipe if I remember correctly. Driving the seals in was not difficult. Also anaerobic sealant on the outside of the seal to help fill any imperfections in my diff housing. The axle shafts themselves should be very clean and I lube them with some vaseline before they pass through the new seal.
No special tools needed that I remember, the seal driver kit is nice to have but not always necessary (usually you can find a socket or something of the same size as the lip of the seal)
Putting the 3rd member back in by myself was the hardest part, but it went right in with some effort (get your body in the right position)
I had to do my seals twice, the drivers side started to leak right away.
The auto parts store sold me two seals, one was the two piece, one was the one piece. My dumb ass went out and bought another of the two piece seals, installed both of those....one leaked. So that's when I researched the two different types and decided with the help of this forum, to use the older style.......now no more leaks. The two piece seal is for the birds in my opinion. I like the old school design, the big funnel is shape part is what keeps debris from your axle tube from getting into the seal and causing problems.
Forget about the outer axle tube grease seals, those things are a joke....they never hold and you will always see them dangling like a loose donut on peoples axle shafts....
1997 CCFB 7.3, ZF5, 4x4, 4.10, baby swamps, TS6, E99 spyder, RiffRaff pipes, 6.0 FMIC, RSK, 315 toyo at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2001 Excursion 7.3, auto, 4x4, 3.73, collecting parts for suspension lift
2000 E350 7.3, auto 2wd, 3.73, toy hauler camper conversion...researching 4x conversion
21.9 liter family