Suction Accumulator/Drier

The suction accumulator/drier is mounted to the engine side of the dash panel to the right of the vehicle centerline. The inlet tube of the accumulator/drier attaches directly to the evaporator core outlet tube.

Suction Accumulator/Drier

Refrigerant enters the accumulator/drier canister from the evaporator core through the inlet tube and the heavier, oil-laden refrigerant falls to the bottom of the canister. A small diameter oil bleed hole is located in the side of the outlet tube near the bottom of the canister. This bleed hole is covered with a filter screen and allows a small amount of the heavier liquid refrigerant and oil mixture to re-enter the suction line at a controlled rate. When the heavier liquid refrigerant and oil mixture enters the compressor suction line, it has a second opportunity to vaporize and circulate through the compressor without causing damage to the compressor due to refrigerant slugging.

A desiccant bag is mounted inside the suction accumulator/drier canister to absorb any moisture which may be in the refrigerant system.

A fitting located on the top of the canister is used to attach the clutch cycling pressure switch. A long-travel Schrader-type valve stem core is installed in the fitting opening to prevent refrigerant loss when the clutch cycling pressure switch is removed.

If it is necessary to check the suction accumulator/drier for excessive refrigerant oil, drill two 1/2-inch holes in accumulator body and drain oil through the hole.