Originally Posted by jarradfiorito
Installing a stronger alloy 30 spline shaft is literally just sliding out the old shaft and sliding in the new.....no other adjustments needed?
That is correct, it's a pretty simple job. All you have to do is slide the new seal, bearing, and bearing see down onto the new axle shaft and then press the bearing and bearing retainer in place with a press. Any machine or 4x4 shop should have a press who can do it for you for $10-20. Then slide the old shafts out and slide the new shafts in and reinstall the bracket that holds it all into the axle housing. Pretty simple.
Stu's website in the drivetrain/axle section at http://www.stu-offroad.com/index.shtml
has a good writeup on how to do it. His site is down at the moment but should be back up later.
Below are a few pics from when I did the same thing. The second pic shows it before the bearing retainer on top is pressed down to hold the bearing in place. The part on the bottom is the axle retainer bracket, don't forget it!