Great pictures and explanation.
One thing I'd like to add (sorry if I missed it) is that it is important not to soil brake pads with greasy fingers as, once contaminated, they will loose some of their efficiency. They absorb grease and from what I learnt there's really no way to make them new again. You will need to exert more pressure on contaminated brake pads to stop the vehicle. This extra pressure produces more heat and also means the discs will wear faster.
Equally, it's important to make sure the discs are free of oil or grease before refitting them on the bike. Brake cleaner is just the right stuff for this, but other solvents can be used to clean oil/grease off discs.
A little bit of copper grease is excellent on the back of the brake pad to prevent brake squeal, which can be so annoying...
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