So now we'll get a start on puting the new gears in. The first thing you will notice about the new gears is that there is only one gear on the intermediate shaft so you will have to remove the large intermediate gear and install it on the new intermedaite shaft. I took this to a friends shop and used his bearing press. I don't know of any other way that is safe to do it. It would not cost much at all to have a shop do this for you if you don't have access to a press.
And here's the assembly with the gear pressed onto the new shaft.
The ring gear is held with 4 bolts and nuts so I simply remove them and slide the gear off the carrier.
I don't have a parts washer but all of the parts that I'm going to resue badly need a serious cleaning so I just use an oil drain pan and some carburetor cleaner to do the trick.
Here's the new ring gear installed on the carrier and the intermediate shaft all cleaned up and ready to reinstall.