If most makers of MH/5ers/TT are like my manufacturer, one of the things you can't find in the mountain of paperwork you find in YOUR unit is detailed diagrams, how to do, how to locate, how to maintain, how to "you name it" for YOUR UNIT. Everything is generic and basic for a certain type of MH/5er/TT.
This might be an effort on the part of the maker to make you more dependent on your dealer's service department or an effort to save time, money, and effort.
Bottom line is that the new owner doesn't have the information he/she needs to seek out problems/solutions on their PARTICULAR model.
Good luck in your search for YOUR UNIT"S diagrams.