Join Date: Sep 2013
Location: Preston Hollow
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Well based on the sound of crickets from this post i assume that no one really knew anything about the hub seals. So i hit the Ford dealer and started going through diagrams and getting the seals it looked like i needed. I figured I would share what i did and the results.
There are a number of vacuum seals, 6 (each side)from what i count. Ill post some pix and hope they come through.
There is the locking hub seal and the paper gasket and there is(im guessing since i did tear the locking hub apart) a seal around the selection knob. A big O ring just behind the bearing assembly and then a big seal in back to seal the axle from the hub. Also a O ring around the ABS sensor.
My problem was the big seal axle seal, totally roached. The axle seal cost me $60, the big O ring was $8 and the hub rebuild kit was $24. I didn't change the ABS sensor O ring and I didn't tear the locking hub apart. I would have done that had the rest not solved the problem. But changing these 3 seals solved my vacuum leak in the front hubs and the auto lock feature now works.
Hope this helps someone out there.
2005 F350 Lariat Crew-cab Long Box
Upgraded FICM with PHP Hercules tune
Edge Insight with EGT probe and Turbo timer
Diamond Eye 5" Performance exhaust with muffler delete
Blue spring update
High Idle Mod