Service Points - Air Filter
6.0L Bible: Air Management System
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* Diesel Information * Checking Air Restriction Gauge * Service Tips 03-1-9 Removing and Replacing the Air Filter *

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Diesel Information:
ENGINE AIR FILTER

The engine air filter warning light, illuminates when the air filter restriction gauge reaches the CHANGE FILTER mark.

The vehicle may be driven with the engine air filter warning light illuminated for up to 400 km (250 miles) without damaging the engine or related components. However, the air filter element must be replaced at the earliest opportunity. Refer to Air filter restriction gauge in the Diesel information chapter for more information.
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Air filter restriction gauge

The restriction gauge, located on the upper housing of the air cleaner assembly, monitors the condition of the air filter element in two ways:

First, the colored indictor inside the gauge highlights the percentage that the air fIlter element is clogged with dust or contaminants. Refer to Engine Compartment in Service Points chapter.

Second, the gauge contains an electrical switch which illuminates a warning light on the instrument cluster when the air filter element is 100% clogged. Refer to the Warning lights chapter. Check the air filter restriction gauge whenever the hood is raised to perform general engine maintenance. If the vehicle is operated in extremely dusty conditions, check the gauge at least every 800 km (500 miles), or two weeks, whichever comes first. The air filter element must be replaced when the colored band on the gauge reaches the
CHANGE FILTER mark. Engine performance and fuel economy are adversely affected when the maximum restriction is reached.
Blowing-out the air filter element with compressed air is not recommended as the compressed air may damage the filter paper.

Note: It is not possible to determine the level of filter clogging by visual appearance alone. A filter which appears to be dirty may actually have several thousand kilometers (miles) of life remaining.

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Always use the underhood air filter restriction gauge or engine air filter warning light on the instrument cluster to determine when the air filter element needs to be changed.
After servicing the air fIlter element, reset the restriction gauge by pressing the button on the end of the gauge.
Note: If the vehicle is operated in a heavy snow storm, in blowing snow or the vehicle is equipped with a snowplow, the engine air filter element may become partially clogged with snow and/or ice. If this occurs, the air filter restriction gauge will move to the CHANGE FILTER mark and the engine may experience a significant reduction in power output. The vehicle may be driven under these conditions for up to 400 km (250 miles) without damage to the engme or related components.
At the earliest opportunity, clear all snow and ice from the air mduction system and replace the air filter element, or remove the element and dry it out. Reset the restriction gauge by pressing the button on the end of the gauge. The air filter warning light 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 Warning lights chapter.

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General Maintenance Infomation:
REPLACING THE AIR FILTER ELEMENT

When replacing the air filter element, use the Motorcraft air filter element listed. Refer to Lubricant and maintenance materials specifications in this supplement. 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 auxiliary 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.

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Diesel Injection Service: Motorcraft Air Filter Ford Powerstroke 6.0L FA-1746 $66.15 (up from $46.50 March 2003)

ShopDiesel: MOTORCRAFT PREMIUM AIR FILTER 2003 6.0 POWERSTROKE $56.99 Ea. (up from $44.50 March 2003)

Geno's Garage FA1746 $54.95

Prices last checked: Feb 4, 2004

Motorcraft FA-1746
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Page Last Updated: March 15, 2003

D. Pruyn

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