JAWSRaptor
Full Access Member
At my wits end trying to fix this leak. Any help would be much appreciated. Here's the story:
2019 SCREW. Jumped it and bent my axle. Purchased a second hand axle (complete) from KHC, out of a 2019 truck with 30k miles. Before they sent it over, I had them replace all the bearings. Axle swap went smoothly, and truck drives great. In less than 100 miles, I discover oil puddling on the back side of the brake dust cover, and splattering on the inside of my wheels. I replaced the axle shaft seal, still leaking. Then I swapped out my axle shaft with my old axle shaft out of the original axle, and replaced the seal again. I placed RTV on the outside of the seal. Drove home 30 miles, still leaking. At this point, Ive gone through 3 seals, and tried two different shafts, and KHC had installed a new Koyo wheel bearing. Any suggestions on what to do next or where to look? The only thing I noticed was on the axle itself it has a small groove that you can feel with your finger, where the seal sits. KHC tells me previous customer did not have this leak. I dont hear any new noises at all, the wheel/tire doesnt feel like it has any play in it. However, I do feel the truck vibrating at 80mph+, enough to vibrate my seats. I haven't gotten the truck aligned after pretty heavy offroad use, so the vibrations could be correlated to that, maybe?. Should I try replacing the wheel bearing again? is the axle bad? Pics attached. Thanks for any help.
UPDATE *POSSIBLE SOLUTION?* I noticed the wheel bearing was different than the Koyo ones Ford uses from the factory. I searched up the 6 P's stamped on there, and realized the application is for Dodge 9.75 axles, and the ones that Ford uses are different. The spacing between the rollers is significantly different and its missing the black retainer piece that keeps them in place. Picked up 2 new bearings and will install to see if that fixes it.
2019 SCREW. Jumped it and bent my axle. Purchased a second hand axle (complete) from KHC, out of a 2019 truck with 30k miles. Before they sent it over, I had them replace all the bearings. Axle swap went smoothly, and truck drives great. In less than 100 miles, I discover oil puddling on the back side of the brake dust cover, and splattering on the inside of my wheels. I replaced the axle shaft seal, still leaking. Then I swapped out my axle shaft with my old axle shaft out of the original axle, and replaced the seal again. I placed RTV on the outside of the seal. Drove home 30 miles, still leaking. At this point, Ive gone through 3 seals, and tried two different shafts, and KHC had installed a new Koyo wheel bearing. Any suggestions on what to do next or where to look? The only thing I noticed was on the axle itself it has a small groove that you can feel with your finger, where the seal sits. KHC tells me previous customer did not have this leak. I dont hear any new noises at all, the wheel/tire doesnt feel like it has any play in it. However, I do feel the truck vibrating at 80mph+, enough to vibrate my seats. I haven't gotten the truck aligned after pretty heavy offroad use, so the vibrations could be correlated to that, maybe?. Should I try replacing the wheel bearing again? is the axle bad? Pics attached. Thanks for any help.
UPDATE *POSSIBLE SOLUTION?* I noticed the wheel bearing was different than the Koyo ones Ford uses from the factory. I searched up the 6 P's stamped on there, and realized the application is for Dodge 9.75 axles, and the ones that Ford uses are different. The spacing between the rollers is significantly different and its missing the black retainer piece that keeps them in place. Picked up 2 new bearings and will install to see if that fixes it.
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