Radiator Cap: Testing and Inspection

1. Inspect the areas under the vacuum valve and rubber seal for rust or dirt particles.
2. Using warm tap water, raise the rubber seal and thoroughly flush away loose rust or trapped dirt particles.
3. Inspect and remove any loose or imbedded rust or dirt particles on the sealing surfaces of the rubber seal.
4. Inspect the degas bottle filler neck opening for dirt particles on the sealing surface at the bottom of the filler neck opening. Use a clean cloth and wipe the sealing surface to remove any dirt particles.