http://i1189.photobucket.com/albums/...F8A6226A88.mp4

I just changed the wheel bearing/hubs thinking it might be that. It obviously didn't help.

It is a little higher pitch than the video sounds.

 

Rear end maybe ? Rear axle bearing?

 

Sounds like the rear pinion bearing mine just went out n locked my rearend up 256,000 mile

 

It sounds to me like its coming from the front end though. Excuse my ignorance but does the front end spin while in 2 hi?

 

I felt the doffs to see if one was warm in a certain place after driving for a minute and both pinion bearings felt hot and the rear left shaft bearing did too? Does that actually help diagnose anything?

 

Yes it does


have a passenger ride in back and try locateing noise deff sound like axle hum.was this noise the reason you did bearings ?

 

Im gettin the same sorta sound out of mine. Sounds like its comin from the right rear to me. But mine is not nearly that loud.

 

Yeah that's the reason I did the hub bearings. It was nearly as loud as it is now though

 

Gear Noise
Pinion bearings have a high pitch noise (because the pinion gear rotates faster than the carrier).
Drive the vehicle and put it under load, if the noise occurs the source is the rear pinion bearing. If the noise occurs while coasting then the front bearing is the source.

Worn carrier bearings usually produce a low pitch noise that is usually present constantly and varies only with vehicle speed.

Axle shaft bearing can produce vibration and noise that will change when the bearings are under load. To check, drive the vehicle and turn sharply to the left and right. This will load one side and unload the other. The noise on the side that is under load will increase, conversely, the unloaded side noise will decrease or go away. When the damage is slight the noise will usually not be noticeable at speeds above 30 mph.

 

Damn, you have 400,000 miles on the clock??

 

Just 432000

Bought it with 30k on the reman motor. Thought I got a good deal but I was blind in the "zone"