Rear axle seals leak. TSB 94-19-24 (PN: F4TZ-1177-C)) - part dealership only?

[onetonjohn]

I notice the groove on the axle was much wider than the o-ring I pulled out of it. Previous owner had silicon gooped up in there. I'm curious if there is a seal that fits - went to Napa and they could only match my o-ring, but my napa sucks. Anyone know if this should have an o-ring, or is there a special seal here. Notice the gap in the groove next to the o-ring.

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[Thewespaul]

You should be fine as long as it stays in the groove, its got an o ring from the factory but the machined surface does most the sealing. This should help you out, let me know if you need anything else.

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[Thewespaul]

Part number for the ford o ring is ford 390258-s

 

[onetonjohn]

Thanks Wes!

 

[onetonjohn]

What's the torque spec on the spindle nut? I read on here somewhere 55ft/lbs and back off 5 clicks, but that seems way too tight. Hub doesn't really spin freely by hand.

 

[Thewespaul]

Thats the spec, but I do it in small steps up to 55ft lbs otherwise it wont seat perfectly and be too tight. You could also go a little loose, and after the first test drive go back over all the bearings and recheck torque and tightness. I like to do that on any fresh build anyways.

 

[Snowmanw900]

What's the torque spec on the spindle nut? I read on here somewhere 55ft/lbs and back off 5 clicks, but that seems way too tight. Hub doesn't really spin freely by hand.

I just done mine recently, the specs I found said 65/ft-lbs then back off 8 clicks. Ends up being about a 1/16 of a turn back off.

 

[IDIBRONCO]

but I do it in small steps up to 55ft lbs otherwise it wont seat perfectly and be too tight.

I spin the hub as I torque the nut down.