2003 Ford Excursion 7.3L Diesel Supplement 3rd Printing - Page 29

General maintenance information 7. Remove the fuel filter cap by turning counterclockwise. 8. Remove and discard old fuel filter element and fuel filter o-ring. 9. Carefully clean the mating surfaces. Installation - F-250/350/450/550 and Excursion The engine will not run properly if the fuel filter is not installed in housing. 1. Apply a coating of clean Diesel fuel to the new fuel filter o-ring. 2. Install new fuel filter o-ring onto fuel filter element. 3. Install new fuel filter and o-ring into the fuel filter housing. 4. Tighten cap onto fuel filter housing slowly, allowing fuel to soak into the fuel filter element. Tighten cap until it contacts the housing. 5. Install engine appearance cover. After replacing the fuel filter, the engine will purge the trapped air as it runs. The engine may run roughly and smoke until the air is completely eliminated. Using a fuel which has more than average impurities may require the fuel filter to be replaced more frequently than the service interval specifies. Installation - E-Series The engine will not run properly if the fuel filter is not installed in housing. 29