Auto Hubs Gone Bad? - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 05-28-2013, 03:48 AM Thread Starter Fanatic
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Auto Hubs Gone Bad?

Hi guys,

So I was rotating my tires and noticed a rubbing sound while turning my front passenger tire. I pulled the tire thinking it was the rotor, I turned the rotor and found that the noise goes away when I "lock" the hub but it comes back in the "auto" psition. I have owned the truck since new never abused it and all regular maintenance was done. Could it be the locking hubs are going out or is it possible I need new bearings? Trucks got around 95k miles, but is my daily driver.

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post #2 of 5 Old 05-28-2013, 04:06 AM
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How many miles on it?

Its likely a combo of the two being bad.

Hub and bearing failure for that era is common

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post #3 of 5 Old 05-28-2013, 04:35 AM
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we went thru about 3 of the OEM plastic (garbage) hubs on my dads 00 superduty till we finally went wiht a set of WARN hubs, then havent broke another one. only other thing that happens is what is probably happening to you, there is a torrington bearing in the back of the actual uni-bearing assembly (the hub wiht the lugs), this torrington bearing supports the stub axle and when in 2wd is spins around the shaft but in 4wd the shaft is locked tot he hub and its all turning together.

my suggestion is to pullt he uni-bearing assembly and loo at this bearing to see if it looks bad. also look at the stub shaft as this bearing wears directly ont he shaft and once it gets loose it will allow the axle to have slop giving a vibration at highway speed in 2wd.

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post #4 of 5 Old 05-28-2013, 04:45 AM
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My 04 just did this a little while ago. I kept hearing a funny noise coming from the front end but could never figure out what it was. Several times crawling around underneath it with the front jacked up looking for anything loose or wore didn't reveal nothing. Finally while going down the road felt a shudder that lasted only a few seconds. Got out and had a buddy role past me slow so I could look at what was going on. Noticed that the front drive shaft was turning even though the hubs were unlocked. Pulled the hubs out and they were corroded bad and hard to turn. Swapped them out and have not had any more issues yet.
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post #5 of 5 Old 05-28-2013, 11:15 AM Thread Starter Fanatic
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Thanks for the responces. The truck has 95,000 miles. If I take out the locking hub and turn the tire, if the noise is gone then its not the bearings? If its still there then I will teardown the entire hub
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