2003 Ford Excursion 7.3L Diesel Supplement 3rd Printing - Page 34

General maintenance information Failure to use the correct air filter element may result in severe engine damage. 1. Remove air filter element from the housing, taking care to prevent dirt from falling into the engine air intake. 2. Clean the air filter housing and cover to ensure good sealing. 3. Install a new air filter element. Be careful not to crimp the filter edges between the air filter housing and cover. This could cause damage to the air filter element and possible severe damage to the engine. When servicing the air filter, always be sure that the rubber water drain hose is not kinked or obstructed. Failure to do so may result in severe engine damage when driving through deep water and/or encountering unusually heavy precipitation conditions. FUEL FILTER/WATER SEPARATOR The engine is equipped with a combination fuel filter/water separator located in the "V" of the engine. • E-Series • F-250/350/450/550, Excursion Water should be drained from the filter bowl whenever the warning light comes on or every 8 000 km (5 000 miles). The WATER IN FUEL light will come on when approximately 100 cc (0.2 pints) of water accumulates in the separator. Replace the fuel filter with Motorcraft Part No. FD-4596 (Ford Part No. F81Z-9N184-AA). Fuel filter/water separator drain procedure 1. Stop the vehicle and shut off the engine. The vehicle must be stopped with the engine off when draining the fuel filter/water separator. Fuel may ignite if separator is drained while the engine is running or vehicle is moving. 34