2008 Ford F450 Diesel Supplement 4th Printing - Page 49
2008 Ford F450 Manual
Page 49 highlights
Maintenance and Specifications After installation of the new filter element, reset the gauge by pressing the reset button on top of the gauge. Note: Vehicle operation in heavy snowfall or extreme rain conditions may feed excessive amounts of snow/water into the air intake system. This could plug/soak the air filter with snow and may cause the engine to lose power and possibly shut down. Either of these conditions may cause the CHECK AIR FILTER message to appear in the message center. You may not need to change the air filter and the vehicle may be driven up to 200 miles (320 km) under the following conditions: • Snow: At the earliest opportunity, open the hood and clear all the snow and ice from the air filter housing inlet (do NOT remove the air filter) and reset the air filter restriction gauge. • Wet: The air filter will dry after about 15-30 minutes at highway speeds. At the earliest opportunity, open the hood and reset the air filter restriction gauge. The air filter warning message on the instrument cluster may be used, in addition to the underhood restriction gauge, to monitor the condition of the air filter element. Refer to the Engine air filter warning light in this chapter of the supplement. Air filter replacement: When replacing the air filter element, use the Motorcraft air filter element listed in Motorcraft Part Numbers later in this chapter. WARNING: To reduce the risk of vehicle damage and/or personal burn injuries do not start your engine with the air filter removed and do not remove it while the engine is running. Failure to use the correct air filter element may result in severe engine damage. • E-series air filter: 1. Disconnect the hoses from the air filter outlet tube. 49