Receiver Dryer: Service and Repair

The accumulator/dryer must be replaced any time the system has been left open for more than 24 hours with the system completely discharged, there is evidence of moisture in the system, the system is badly contaminated, there is more than five ounces of compressor oil in it, or the accumulator/dryer is restricted, plugged or perforated. Replacement of a refrigerant line or a major component (condenser, evaporator or seized compressor) requires replacement of the accumulator/drier. The receiver/dryer does not necessarily need to be replaced every time there is a loss of refrigerant charge, a component is replaced or the outer shell of the unit is dented.





1. Disconnect battery ground cable.
2. Discharge refrigerant from system.
3. Disconnect electrical connector from pressure switch, then remove pressure switch from accumulator.

Fig. 2 Spring lock coupling disconnect & connect:

4. Disconnect suction hose from accumulator/dryer, Fig. 2.
5. Remove accumulator/drier attaching screws, then disconnect drier from evaporator outlet tube and remove the accumulator/drier.
6. Cap all open refrigerant connections to prevent entry of dirt or moisture.
7. Reverse procedure to install. Use new O-rings lubricated with suitable oil.
8. Leak test, evacuate and charge system.