2004 Dodge Ram 3500 Pickup Owner Manual Diesel - Page 332

332 MAINTAINING YOUR VEHICLE Do not remove the top of the air filter housing to inspect the filter element on your diesel engine under normal operating conditions. cleaner filter becomes clogged and air pressure drop across the filter element increases, a yellow disc travels along a graduated scale on the side of the Filter Minder™. The yellow disc will always show the greatest restriction experienced by the filter element. When the disc reaches the red zone, the filter element may need to be replaced. There is no other time or mileage interval for changing the air cleaner filter element. If the vehicle experiences a sudden loss of engine power when being driven in heavy snow or rain or when plowing snow, check the Filter Minder™ • If the Filter Minder™ is showing a plugged filter, the filter should be visually inspected for snow/ice build up or extreme water saturation. • If any of these conditions exist, the filter element should be replaced. The clear plastic housing on the Filter Minder™ allows you to view the amount of air pressure drop across the filter element. It consists of a diaphragm and a calibrated spring sealed inside the plastic housing. As the air