Econoline E150 1/2 Ton V8-5.4L CNG VIN M (1998)
Accumulator HVAC: Description and Operation
Suction Accumulator/Drier
NOTE: Replacement of the suction accumulator/drier is necessary any time a major component of the refrigerant system is replaced.
Major components include:
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A/C condenser core
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A/C compressor
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A/C evaporator core
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a refrigerant hose/line
An A/C evaporator core orifice or O-ring seal is not considered a major component but the A/C evaporator core orifice should be replaced whenever the
A/C compressor is replaced for lack of performance.
In addition to the preceding condition, the suction accumulator/drier should also be replaced if one of the following conditions exist:
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The suction accumulator/drier is perforated.
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The refrigerant system has been opened to the atmosphere for a period of time longer than required to make a minor repair.
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There is evidence of moisture in the system such as internal corrosion of metal refrigerant lines or the refrigerant oil is thick and dark.
The suction accumulator/drier is mounted to the right of the vehicle centerline. The inlet tube of the suction accumulator/drier attaches directly to the
A/C evaporator core outlet tube and the outlet tube of the suction accumulator/drier attaches to the A/C manifold and tube.
After entering the inlet of the suction accumulator/drier, heavier oil-laden refrigerant contacts an internally mounted dome (which serves as an umbrella)
and drips down onto the bottom of the canister.
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A small diameter oil bleed hole, in the bottom of the vapor return tube, allows the accumulated heavier liquid refrigerant and oil mixture to
