The metal clasp takes a slotted screw driver. Turn the screw counter-clock wise to loosen it. Slide the clasp down to near the end. Make sure the tube and rubber tubing are tight and secure. No dimples or dents. If the rubber tubing appears old or damaged, replace it. Once everything is back in place, tighten the clasp so it fits over the pipe. Don't over tighten it, nor leave it lose either. Clean off everything and dry it. Start the vehicle and check if the leak has stopped. It should if the tube is not bent or dimpled.
