Front axle questionfor an F250

It is NOT the tube. I have been messing with Dana 30,44, 50 and 60 front ends for over 30 years and even if the tube was pulling out a little, it would not eat the bearings. If you are tighening bearing to 65ft, you are over torquing them big time and burning them up plain and simple. As I said earlier, the bearing are oversized for load and the only thing that will kill them is lack of grease or over preloading them. You will chew the tires off from misalignment before the bearings would give up "IF" they are set up properly. Try this, torque them to 75 ftlbs to seat the bearings and then back the nut off 1-4 turn then lock it down with the other nut against it. When you are done the tire should spin freely and if you try to check for endplay, there should be the very slightest amount detectable in bearings.(if not back it of a little bit more and be advised that when you torque the second nut against the first it tighten the bearings more and that is why you back it off 1-4 turn for starters) When the hub and bearings heat up and swell they will expand and remove some end play so you want then the slightest bit loose cold. Make no mistake, you are setting the bearing up incorrectly and that is why they are failing. I found out the hard way about 30 years ago. Or you could just keep chasing gremlins.

John Smith

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