Neal Gass

It does this even when the truck is on the hoist with the wheels off the ground.All 4 spin when I go into 4wd but It is really so noticeable and violent it seems it can't be right.

They look fine and show no play or damage but I'm really not sure how to properly test them. If they are bad is it obvious by looking at them?

Just when you think your done- another issue. I have an situation where when in 4wd the truck functions fine (mostly to pull my boat out of the water at the lake) no issues. The problem is that if I turn either left or right while in 4wd the front end shudders pretty violently. When I straighten back up its fine. I got the truck off the ground and ran it in 2wd and 4wd with the wheel straight ahead. All worked fine until in 4wd if I turned the wheel either right or left the front end began to shake as if something was out of balance but in a big way. I straighten back out and all is well. Seems like something is majorly wrong here. The front differential fluid is up tp the fill hole and nothing seems loose or broken. It goes in and out of 4wd easily with no issue. If anyone has any ideas or has had this happen to them I would truly appreciate and help. Thanks Neal My truck details again: 2001 Dodge 3500 5.9 Diesel 4x4 Dually Automatic Transmission All Stock NO Mods 82,000mi

The bearing was OK but I figured I might as well do it right and replace the whole thing. Ground the bearing and split it with a chisel (not that hard) and slid it off. Had a nice piece of pipe that was exactly the size of the bearing and hammered the new one on. Marked all the pieces before I took off the shafts and replaced them in the same orientation that they came off. Thanks again for all the help- the truck is perfect again! Neal

Drained the old fluid and removed the rear differential cover and was surprised at a few things. The old fluid was surprisingly clean and relatively clear. It also didn't have the horrible smell I usually get from gear oils.The lower inside area of the case had no debris or metal shavings and the magnetic fill plug was clean as well, no shavings. Closed it up using a new gasket and refilled it with 75-140w synthetic with friction modifier. Took it out on the road and it seemed worse than ever.............. Turned it right around and climbed under in the Nevada 113º in the shade and found The darn thing is just bouncing around in the hanger with so much play I'm surprised it just didn't pop through the bed! So thanks for pointing in the right direction fo plan B which is now to replace the center bearing and wonder if this is something I can do or do I need special tools to do it. I'm getting so close and if I get this fixed the truck will be perfect (or for a while) again. Thanks Neal

So I do have a Dana M80 DSA Anti-Spin Differential and I got the lube today and am going to change it in the morning. I'm hoping to check back in tomorrow with the results. Thanks a million! BTW- where are the carrier bearings?

Just got out from under the truck and found this info: It looks like it is a DANA 80 42434 272 0 REV AB Does that sound like the type with clutches? Again thanks a million, Neal

Hey Guys, New weird problem. Its a 2001 3500 auto trans 5.9l 85,000 miles. The issue is when I make a very hard turn, both right or left, the rear end (or something in the back) seems to be extremely loose and starts to bounce and make an extremely loud banging noise that goes away after I slow down and straighten out. It really feels like the entire truck is going to rattle apart until I get it straight again. Any ideas would be greatly appreciated. Thanks Neal

This article saved my truck and it is driving like new again, Thanks a million. Neal