bearing failure? HELP

[76K5]

was up everybody. I have a weird noise coming from the front of my truck. It only happens when I have it in 4 wheel drive and have the hubs locked. It starts to vibrate and sound like a bad bearing. However when I unlock the hubs and leave it in 4 wheel drive the noise stops. Does this sound like a wheel bearing or something like a carrier or pinion bearing. Anybody had this problem. Thanks! /forums/images/graemlins/usaflag.gif

 

[Calclips]

If it only does it in 4 wheel, then there is probably something wrong in the t-case

 

[76K5]

when I have the Tcase in 4 wheel drive and the hubs are unlocked it does not make the noise. So woiuldn't that mean its not in the Tcase? /forums/images/graemlins/usaflag.gif

 

[Calclips]

I'm sorry, I read wrong. You said that it dosen't do it when you have it in 4 wheel with the hubs unlocked, that would mean that it would probably be a problem somewhere in the front axle.

 

[Blazer1970]

Most likely a steering u-joint in the front axle.

 

[Grim-Reaper]

Ujoints in the axle shafts or the driveshaft. If you get a vibration under acceleration I would start looking at driveshaft.