Now for the brake pads....
8) Remove the 12mm caliper bolt (lower one). There are two, to hold the caliper body to the caliper frame. Leave the upper one alone.
9) Now that the lower bolt is removed, you can flip the caliper body open, exposing the brake pads.
10) Pull out the old pads and retaining clips and clean them up. Discard the old pads. Put grease spots on the pads at the spots shown (yellow triangles) to prevent/reduce squeeling brakes. That is, we are greasing the BACK of the pad, NOT the part that contacts the surface of the rotor.
Note the triangle pointing to the piston edge. We will be greasing this spot, but not yet.
11) Insert the retaining clips and the new pads.