i like the idea of writing to a 4th graders level of understanding, much like
the way they used to write up military manuals
perhaps segment the system and color code it, then put each into a section
within a large 3ring binder
section one: windgen #1, (the big blue fan thing out in to the west of the barn)
then insert a picture of the beast, that is large enough and good enough no one but
an idiot could mistake it for anything other than what it is.
the subsection, general maintenance, weekly, monthly quarterly, annually
diagnostics, noise, vibration, visual inspection,
emergency concerns, how to shut it down, how to shut it out of the system,
then a section on how to service the thing on the tower,
then a section on how to get it down and back up again,
then a section on manufactureing a repair details
etc
if you do this for each major component of your system, it should be such that she
can manage a certain amount of maintenance or hire out to someone that armed with your book can put her back in business again without haveing to reverse engineer something that might appear to be from a martian probe, with egyptian hyroglyphics,
you know how it is when you want to take apart a laptop computer and all those well hidden screws? you end up wrecking the thing needlessly trying to effect a simple repair.
i don't think it is something that can be done overnight, but if you setup an outline or format and follow the same conventions throughout it should come together fairly quickly.
and the guy that has to follow up after you will be forever greatful for your efforts, believe me i know,, i follow up on systems repairs quite frequently that there is no schematic for, just mile of conduit and jillions of conductors going everywhere. its nice to find a hand sketched piece of brown paper bag tucked away with some details of a system that some guy went to the trouble to document.
saves a lot of time and mucho aggravation.
good luck with the project, and here's to a long life my friend

bob g