have a 09 triglide had service performed at dealership and they adjusted the parking break. It was adjusted too tightly. while on a trip the caliper wore through the pads and into the rotor destroying the rotor ,pads, and the caliper. on the left side only. would this parking break adjustment cause this

 

1909 harleys did not have disc brakes of parking brakes are you sure you are in the right section -- this is flat head the last one built was 1973 / 45 inch