They really are fit and forget, until they wear
When the pads get thin, change them
When the discs get thin, change them
They are maintenance free
Here the thickness of my discs from the photo above paper thin at 7mm probably the originals from 10 years ago, they have been on at least 5 that I know of
View attachment 429833
The pads need to be nice and loose
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They should come ready shimmed no need to add grease anywhere
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If the slide err slided and the boot is intact it does not need touching
Fingers crossed they will not need touching for another couple of years and then only for new pads