I've only worked on my GE motor so hopefully this helps at least a little. I'm not sure, but you may have some space constraints to deal because of the turbochargers and air plumbing, but it should't be too tricky.
Here's what I do
Disconnect the battery
Relieve the tension on the accessory belt, then slip the accessory belt off.
One cable can be unplugged from the alternator by hand. There's second cable that you will need to remove hidden under a protective black platic cap. You will have to remove the nut that is holding it on.
There's two long bolts. I loosen them both up and remove the bottom bolt. The grab ahold of the alternator so it doesn't fall, and remove the top bolt.
Also, my stock fan shroud, air box, and engine undercover are gone. If you still have those in place, you may have to remove them if they are in your way and depending on how you are acessing the alternator.
You dont need to remove the fan. Get your socket on the tensioner and loosen the belt. There are two bolts holding the alternator in place and one electrical clip. Remove the three and take out the alternator. Easy. And like said before, disconnect your ground first.