kenworth dump truck is binding up

I should have been more specific in my last post.
The pinion yoke nuts tend to come loose on some trucks and cause a vibration. My old KW was one of those trucks.

 

I didn't mention the Ujoints but Awhaney12 did and since the "rears" were replaced, I would only hope this was accomplished BEFORE it was drug back under the frame, jacked into place and mounted...thanks.

 

Were the rears rebuilt or used?

I've had a problem since my rear rear got fixed. I have no idea on rebuild or what. Only does it in morning on my way to first load. Under acceleration. Climbing a certain upgrade. Will actually make the truck shake a little. After that climb she's good the rest of the day. Untill I"m driving through the field with the 2wd kicked on. Then I get an occasional small clunk. I don't have a lock for 4wd drive.

Never had that problem till the rear got fixed. The front one hasn't broke down yet to get fixed.

 

did you pull the drive shaft and have it checked?

Did you have it in a parking lot with someone watching it as you start moving it?

 

Another simple test is getting a infrared temperature gauge and comparing similiar parts.
Front vs rear u joint.
Wheel bearings.
Do this after a hard pull.