Rear End Help. Dana 70-2u

[djharby]

Ok, I have an 2001 4x4 2500 eclb 192k power lok. BOM tag is gone and it has had a diff bearing change, one side is koyo other it timken. My rear end is stamped D702U. 

First off what is the 2U and I pulled it apart I have a pinion bearing going and found out that the spider gears were looking bad and the clutches for the lsd are toast. When I pulled the diff there was no shims on either side. does that sound correct at all?

[djharby]

Anyone? 75 views and no help?

[CSM]

No idea what the 2u is. Was it a factory unit or did Bubba get into it at some point?

[Buzzinhalfdozen]

Mine is also cast with a 70-2u but no idea what it means. Sounds like "Bubba" got in your rear end...pause for laughter...and didn't know what he was doing. Pretty unlikely there would be no shims on the carrier.

http://www2.dana.com/pdf/XGI.PDF

[CTcummins24V]

I paid someone to rebuild mine, I think it was $2400, all Dana parts and new u-joints on the 2 piece driveshaft, balanced.

[Dieselfuture]

Sounds to me like someone threw it together without giving a crap just to sell maybe. I would not waste my time on it unless you can do it all your self, check craigslist or junkyards.

[djharby]

Ya, I am going to do it myself. I can't see paying someone to do it when I can figure it out. I have found a little info here and there to get the job done. Just for the life of me I don't understand why they would half *** it like that.

Now the shims do they fit down in where the axel tube is or do they sit between the housing and the bearing? I am going to get parts ordered this week.

[Buzzinhalfdozen]

Shims go between the housing and the bearing.

[djharby]

It was pretty tight getting it out. Any idea average thinness to start with on each side?

[CSM]

Depends on the wear pattern. It may not need much, if any.

[djharby]

Gears look really good.

[Dieselfuture]

You really need dial indicator to do it right, but if gears looked good then keep shims where they were.

[Wild and Free]

The shims for the carrier are in between the bearing and the case of the carrier so if you were expecting to see them fall out with the carrier you will not, requires the carrier side bearings to be pulled to get to the shims, to shim a carrier one need dummy bearings which are oversized on the inside race to slip on the carrier housing by hand not requiring them to be pressed on and pulled each time to install and remove about a dozen times to get the correct shim thickness setup.

 

That is a huge advantage of the AAM versus a Dana axle, shimming danas can be a royal pain to set up versus the simple threaded adjuster ring on the AAM setup.

[djharby]

The shims for the carrier are in between the bearing and the case of the carrier so if you were expecting to see them fall out with the carrier you will not, requires the carrier side bearings to be pulled to get to the shims, to shim a carrier one need dummy bearings which are oversized on the inside race to slip on the carrier housing by hand not requiring them to be pressed on and pulled each time to install and remove about a dozen times to get the correct shim thickness setup.

 

That is a huge advantage of the AAM versus a Dana axle, shimming danas can be a royal pain to set up versus the simple threaded adjuster ring on the AAM setup.

Thanks for the info on that. 

 

Does anyone know what the d70-2u... the 2u part mean?

[Wild and Free]

could be an application #, don't worry about it the internals are the same on all dana 60 - 70 - 80 ect except that there can be 2 different style of Limited Slip units in some,

[fire176969]

Wild and free is correct. I also have a 70u2 rear in my truck. The only difference is the yoke and input seal from any other Dana 70 in the dodges. Took me about 4 hours on the phone to finally get an answer on it. I rebuilt mine a couple years ago and got the kit and info from randy's ring and pinion if I remember correctly.

[djharby]

UPDATE!! everything went back together prefect. I checked backlash and pinion depth everything was with in spec. gear mesh pattern was good. I was lucky I caught the bearing before real damaged happened.

[dripley]

Always good to hear of a happy ending. good for you.

[Wild and Free]

Always good to hear of a happy ending. good for you.

 His rear end is happy again...............

[djharby]

Next Project is the front axle. 4WD with not engage. it has a cable lock. I am prety sure its the fork or the pads.