Re: Parking brake adjustment on new cpp rear disc brakes
By back and forth I mean to rotate (loosen/tighten) the screw. Doing this should activate the ratchet mechanism to adjust the arm (screw) position in relation to the clearance between the pads and disc. Using the nut that retains the arm on the outside of the wrench will keep the screw from receding into the caliper.
To illustrate; if the wrench points straight up when the pads are tight on the disc, after turning the wrench to loosen/tighten the screw the wrench should return to a position that is less than straight up. This can take a few tries (back and forth rotations). Once this happens, remove the wrench and try the arm back on. It it's within 1/4" of the stop, you are adjusted. If not put the wrench back on and do it again until it is adjusted.