Mountaineer RWD V6-4.0L (2008)
Accumulator HVAC: Description and Operation
SUCTION ACCUMULATOR
NOTE: Installation of a new suction accumulator is not required when repairing the A/C system, except when there is physical evidence of
contamination from a failed A/C compressor or damage to the suction accumulator. Damage to the suction accumulator includes leaks in the suction
accumulator, physical damage to the suction accumulator shell or desiccant, or moisture contamination. Moisture contamination results only from a
complete loss of refrigerant, and equalization of the refrigerant system pressure with atmospheric pressure for a period longer than 1 hour. If even a
slight amount of positive refrigerant pressure is present in the refrigerant system before repairs are carried out, the suction accumulator should not be
replaced.
The suction accumulator is located at the RH rear of the engine compartment. The suction accumulator is used to prevent residual liquid refrigerant from
reaching the A/C compressor after leaving the evaporator core. The suction accumulator allows the accumulated heavier liquid refrigerant and oil
mixture to re-enter the compressor suction line at a controlled rate. A desiccant bag is mounted inside the canister to absorb any moisture which may be
in the refrigerant system.
