Bonneville V6-231 3.8L VIN 3 SFI (1988)
Accumulator HVAC: Description and Operation
Accumulator-Interior Parts
Description
Connected to the evaporator outlet pipe, the sealed accumulator assembly acts as a refrigerant storing container receiving vapor and some liquid and
refrigerant oil from the evaporator.
Operation
At the bottom of the accumulator is the desiccant which acts as a drying agent for moisture that may have entered the system. An oil bleed hole is also
located near the bottom of the accumulator outlet pipe to provide an oil return path to the compressor.
A low-side pressure Schrader-type valve service fitting is located near the top of the accumulator. A similar Schrader-type fitting is provided for
mounting the pressure cycling switch. It is not necessary to recover refrigerant from the A/C system to replace the switch. The accumulator is serviced
only as a replacement assembly.
