7.5 rear, growling and grating

[Targis34]

My B2500 has developed a noise in the rear end somewhere. I originally thought it to be the r/driver side whell bearing but now I'm not so sure.
The noise is a pulsating howl, that goes away UNDER LOAD.....if I put in the clutch or while slowing down it gets really bad. There is a noticeable pulsating of the truck kind of like a bad wheel might make. (no it not..;-))
I also am experiencing a grating noise on tight left turns or if i made a tight turn in reverse (probably the same manuver ) but it doesn't happen enough to know for sure. I almsot ordered bearings and seals (kit) but thought i'd be better to wait and figure it out first.
If it is bearings and/or something else in the rear end would I be better off to get a different diff from the wreckers??

Thanks Mike

 

[srteach]

Check the u-joints in the drive line.

 

[wiesket]

Have you checked the u-joints for wear or extreme play?

 

[Targis34]

Yes, U-joints seem ok...They were new less than 6 months ago. I know they could be bad again in thaat time but they seem ok...no extra play, no clunking. I did have a problem last yr with the collar on the drive shaft. It came off so i glued it back in place (worked great except in wrong place). I ended up removing it, destroying the u-joints with the vibrating. My gut tells me its more crap along the driveline..

Mike

 

[doorgunner]

wouldn't hurt to remove the diff. cover & check for metal paticles b4 you grind up everything if it IS a wheel bearing......

 

[trail B2]

Sounds like the noise they make when there low on rear end oil maybe?