Originally Posted by
cyccommute
There’s an error in your procedure. Backing out the 3mm pad adjusters is wrong. Loosen the caliper mounting bolts, then turn the 3mm pad adjusters in so that they are about equal. The rotor should be locked in place and the wheel won’t turn. Now tighten the caliper bolts. This will hold the caliper straight while the caliper bolts are tightened down. Once the bolts are tight, back out the 3mm pad adjusters so that they just clear the rotor without dragging. This will make the whole procedure easier.
In theory this sounds good, but in practice, the simple action of tightening the caliper bolt tends to twist the caliper (and push the locked-in rotor) leaving you with a slightly cocked caliper with respect to the rotor alignment. I prefer to backlight the area behind the caliper so i can see the gap and alignment while tightening the caliper bolts one at a time, allowing for any corrections that might need to be made when the caliper wants to twist under the tightening bolt.