12) Because the old pads are most likely thinner than the new ones, the piston will probably need to be pressed inwards in order to widen the caliper enough to accomodate the new pads. I used a big C clamp to push it in maybe 3mm. After compressing, I greased up the ring edge of the piston.

I highlighted the piston cylinder.

(Looking back, I probably should have used a piece of wood between the clamp the piston for protection and more even compression).



13) Flip the caliper back down, replace and tighten the 12mm caliper bolt. Replace the wheel and pump the brakes to rebuild the pressure. Follow proper brake in procedure (not part of this DIY).

I covered my brake fluid resevoir with a rag, but with the small movement of the piston, no fluid leaked out.

Let me know if you like this DIY and if it's useful.