One end of the brake band is stationary usually on a pin/rod welded to the frame, the other end floats- most set-up's the floating end is either on a rod attached to the pedal or a cable, when the brake pedal is applied it pulls it forward closing the gap on the drum.Yes the pin with no hole in it could go to the brake band as long as it's the right diameter & length.Your brakes appear to use the flat plate w/ 3 holes to drop the location of the cable and provide a return spring for the pedal.
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