Take your new brake pad and place the two inside washers on the bolt and slide them all the way to the pad. The one closest to the caliper should have one rounded edge that faces away from the caliper surface.

Feed the bolt through the elongated hole on the caliper with the brake facing toward the centerline of the bike.

Next feed the outside washers onto the bolt. The rounded washer should be placed first with the rounded edge away from the caliper.

Finally screw the nut onto the end of the bolt and tighten the nut enough to stay on but still allowing the brake pad to slide up and down in the oval shaped hole in the caliper.

Repeat these procedures for both sides.