I am tasked with choosing a word that covers both the repairing of a mechanical device and mechanical manipulation; when something is not broken yet could use some tinkering.
"Wrenches are tools that provide ______ functionality."
We can repair cars with wrenches, but we can also use wrenches to manipulate things that are not broken (fire hydrants, ect).
I was briefly contemplating using the word "reparation" but that only includes repairs, and it seems to be considered archaic.
Question: So what word best captures the functionality of repairs + general mechanical manipulation?