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A/C Evaporator: Description

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The A/C evaporator for the heating-A/C system is located within the HVAC housing, behind the instrument panel. The A/C evaporator is positioned in the HVAC housing so that all air entering the housing must pass over the evaporator fins before it is distributed through the heating-A/C system ducts and outlets. However, air passing over the evaporator fins will only be conditioned when the A/C compressor is engaged and circulating refrigerant through the A/C evaporator. See Fig 1.

The A/C evaporator tubes are connected and sealed to the liquid and suction lines by use of rubber O-rings and a tapping block.

The A/C evaporator can only be serviced by removing and disassembling the HVAC housing.

Fig 1: A/C Evaporator - Typical
GC0026049Courtesy of DAIMLERCHRYSLER CORP.
1 - A/C EVAPORATOR