A while back, my father and I came up with a checklist for basic maintenance, combining the base recommendations in the back of the owners manual with our experience with diesels (we've owned a number over my lifetime).
Here's what we finally agreed upon:
Two things to note:
1) If you wheel and/or tow fairly often, then you will want to change your transfer case fluids and fr/rr axle fluids on a more frequent basis. However, if this is primarily your DD vehicle, then you can probably just use the schedule as is.
2) The
(mechanic) is for things that I can't do with my current garage setup... You can ignore that if you like.
Enjoy. Hope it helps!