The proper way is to remove the brake caliper from the vehicle, the piston boot, the piston seal, the brake caliper bleed screw cap, and the brake caliper bleed screw, inspect the brake caliper bore and the piston seal groove for scoring and corrosion, the brake caliper mounting bracket guide surfaces for corrosion and wear, clean all the residue from the brake pad guiding surfaces on the brake caliper housing and the brake caliper mounting bracket, dry all the parts with filtered unlubricated compressed air, and blow out all passages in the brake caliper housing and the brake caliper bleeder valve.
By BobGM Specialist
29/10/2022