Suction Accumulator/Drier

The suction accumulator/drier (19C836) :

• Is mounted to the engine side of the dash panel (01610) to the right of the vehicle centerline.
• The inlet tube of the suction accumulator/drier attaches directly to the evaporator core outlet tube.

Refrigerant flow is as follows:

• Refrigerant enters the suction accumulator/drier canister from the A/C evaporator core (19860) through the inlet tube and the heavier, oil-laden refrigerant falls to the bottom of the suction accumulator/drier canister.
• A small diameter oil bleed hole is located in the side of the outlet tube near the bottom of the suction accumulator/drier 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 A/C compressor (19703) without causing damage to the A/C 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 suction accumulator/drier canister is used to attach the A/C cyclic switch (19E561) . A long-travel Schrader-type valve stem core is installed in the fitting opening to prevent refrigerant loss when the A/C cyclic switch is removed.
• If it is necessary to check the suction accumulator/drier for excessive refrigerant oil, drill two 1/2-inch holes in suction accumulator/drier body and drain oil through the hole.