15. REAR BRAKE/REAR FORK/REAR WHEEL/REAR SHOCK ABSORBER DINK50/125 Remove pad spring (3) from the caliper body. Do not remove the retainer from the bracket unless replacement. Remove the piston from the brake caliper. If necessary, use compressed air to squeeze out the piston through the brake fluid inlet opening and place a shop towel under the caliper to avoid contamination caused by the removed piston. Check the piston cylinder for scratches or wear and replace if necessary. Push the piston oil seals (4) outward to remove it. Clean the oil seal groove with brake fluid. Be careful not to damage the piston surface. 15-18