Differential bearings

I am at a point to were i can replace differential carrier bearings. The problem is the bearings don't look bad and i don't know if i would be able to replace them and get everything back together properly, backlash, bearing preload, etc. Are there any videos out there of this being done? I have read the procdure in the the manual and i have a hard time understanding it. Any thoughts?

Thanks for the pics. Are there torque specs. listed for this type of repair? My shop manual doesn't have any listed.

I can't say for 100% on a tractor, but that diff is designed just like a Ford 9" with the threaded carrier bearing adjusters. There isn't a torque spec rather it's measuring the bearing preload rotational torque with a an inch pound torque wrench. I shoot for 15-20 inch pounds on the pinion then add another 10 inch pounds measured from the pinion nut with the carrier installed. With threaded adjusters I would strongly recommend you check tooth contact patch before you call it good. .005-.012 is typical backlash in an automotive axle.
Now here's where it gets a little interesting. You're probably installing the original gears likely with a wear pattern on them. I was talking with Dr Allis on this and he says many times in the past he found that restoring bearing preload and correct center tooth contact patch made more noise than before. He did say that he would typically install them with more backlash than original. Sometimes it helped with noise but not always. Sometimes they can sound like they're grinding away and live a long happy life, other times not.
The point I think he was try to get across was if I mess with my noisy rear gears, it's a lot of work and very possibly I might make the noise worse.

Edited by Brian Jasper co. Ia - 17 Jul 2015 at 4:39pm