OK, here's the history.
I bought the new WARN hubs, and couldn't get the old automatic hubs off. I didn't have the correct tools to reach deep enough to get to the ring clips that hold the hub in off. I took it to Big-O Tire and paid them to repack the front wheel bearings and replace the hubs. Everything was fine for about a month. Then the noise started.
I took it back and they re-packed the bearings again. All quiet for about 2 weeks. I got fed up, and pulled it apart myself. Replaced the brake pads, brake hardware, bearings and seals. I even replaced the WARN hubs just to make sure they weren't defective. The old brake pads only had 3,000 miles on them and were in great shape. Looked as thick as the new ones. Same problem immediately. Got really disgusted and took it back to Big-O. They said there was a grease seal and a dirt seal on the late model Broncos and F-150's, and that they rub on the spindle flange. They said that Ford had a service bulletin on it, and that it was a "known issue". OK, fine, fix it. They said they put some grease between the back dirt seal and the flange on the spindle. All quiet on the Bronco front.
1 week later, noise again. The noise doesn't start until about 5 MPH, and the wheels spin freely and quietly when the <nobr>truck
</nobr> is jacked up. I've torn it apart twice since the first time I tore it apart, and have definitely checked the torque on the nuts. I can see absolutely NO sign of anything rubbing anywhere. Bearings look fine, pads look good, spindle looks fine. ABS light does not come on, except for during starting, which is as it should be. Locking or unlocking the hubs, and putting it in 4 wheel drive has absolutely NO affect on the noise, so I don't think it's the hubs.
Now the noise is getting worse. It's gotten so loud that you can hear it over the stereo. (Time for a better stereo?) [img]images/graemlins/smile.gif[/img]
I'm pretty much out of ideas. I can't find a thing wrong with it, and the noise gets worse daily. Both wheels are making this noise, and I've pulled both sides apart 3 times.
Thanks for all the responses.
P.S. Here's a link to what the hubs look like. http://extranet.warn.com/warn.nsf/pa...s.Premium.html