Expedition 2WD V8-281 4.6L SOHC (1998)
Compressor/Pump: Description and Operation
The RAS air compressor:
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Is not interchangeable with four wheel air suspension (4WAS) compressor.
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Consists of the compressor and vent solenoid; neither are replaceable as individual items.
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Is mounted in the engine compartment between the washer fluid bottle and headlamp (RH front corner).
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Is a single cylinder electric motor driven unit that provides pressurized air as required.
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Is powered by a solid state relay, controlled by the air suspension control module.
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Passes pressurized air through the compressor air drier that contains silica gel (a drying agent). Moisture is then removed from the compressor air
drier when vented air passes out of the system during vent operation.
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Air drier has a single port and is not interchangeable with 4WAS compressor air drier.
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Air drier may be replaced separately.
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Incorporates a snorkel that may be replaced separately.
