The Stovebolt Site Forums The Parking Lot Big Bolts Pinion on a 2-ton rear end

Has any body on here ever had a 47 or year close 2-ton rear end apart?
Mine is making some funny noises when I start it and drive it about the first 1/2 mile. After that it quits. It's making a pinging sound particularly when I back off the accelerator. Last time I drove it around the block I hit a pot hole about 15mph and the what ever pinged grabbed so bad the truck almost stopped.
I think it has something to do with the input shaft of the rear end. I think the yoke might be loose on it which is causing it to ride back and bind then it pops loose.
What I'm concerned with is if the pinion shaft and gear on it are one piece like newer models or is it possible that it is a two piece shaft?
IF it's two piece I'll probably have to tear the rear end
And if that's the case I'd like to know if their is a crush bushing in there like new chevy rear ends, and if so where I can get it.
Any ideas?

Hy 1947farmer, there are many different pinion mounting methods on the larger rear ends, none of them involve the use of crush sleeves, in the old rear ends I am aware of, also I have never seen anything but a one piece pinion shaft/gear that your "U" joint flange bolts to, hope that helps.

Sounds like you may have something rolling around in there, getting caught in the teeth. Id pull the cover off and look inside.
If the pinion is loose, you should be able to grab the yoke and wiggle it.

Check for a dry U-joint. They sometimes make noises like you describe.