2nd Gen Non-Engine/Transmission Broke the Dana 70, some questions

[JRM]

Noticed oil on the tailgate only to find a small hole in the diff cover, pulled the cover to find 2 teeth on the pinion broke off. Does anyone know the Dana 70 well? Can I just buy a ring and pinion and throw them in?

Thanks, Joe

1995 dodge 2500 diesel automatic Not sure the gear ratio- it does 70MPH at the rev limiter in 3rd so my friends say 3:54?

video of what I found:



YouTube - 1995 Dodge diesel rear diff broken

 

[Road Dog]

The short answer is NO. Assuming there's no other damage the pinion has to be shimmed to mesh properly with the ring. Rebuilding a diff is a special skill.

There's a tab on the diff cover with the gear ratio. It'll be 3. 55 or 4. 11.

 

[DSeamans]

Rebuilding them isn't that hard if you have decent mechanical aptitude. You do need some prussian blue dye and a dial indicator. I've done a handful and all but one were in specs by matching new shims with the old ones. Getting the carrier bearings off can be a bear. I've had to cut them nearly off with a cut off wheel then pop them with a chisel. Do some web research to get familiar and who you get the gears from can be a lot of help. I was scared to death on my first one and it has over 100k on it and still going strong. Take your time and pay attention and you can save a bundle. Good luck.



Dave

 

[toms73novass]

Here is a great resource helped me out do mine:



Here