Accumulator HVAC: Service and Repair

Suction Accumulator













Removal and Installation

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 one hour. If even a slight amount of positive refrigerant pressure is present in the system before repairs are carried out, the suction accumulator should not be replaced.

1. WARNING: Before servicing a vehicle equipped with a fire suppression system, depower the system by following the procedure in Fire Suppression System. Failure to follow the instructions may result in serious personal injury Procedures.

With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Jacking and Lifting Service and Repair.

2. Recover the refrigerant. For additional information, refer to Climate Control System - General Information and Diagnostics Air Conditioning (A/C) System Recovery, Evacuation and Charging.

3. Disconnect the suction accumulator outlet fitting.
- Discard the O-ring seals.

4. Disconnect the suction accumulator inlet fitting.
- Discard the O-ring seals.

5. Disconnect the A/C cycling switch electrical connector.

6. Remove the 3 suction accumulator bolts.
- To install, tighten to 15 Nm (133 lb-in).

7. Remove the suction accumulator.

8. WARNING: If the vehicle is equipped with a fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System. Failure to follow these instructions may result in serious personal injury Description and Operation.

To install, reverse the removal procedure.
- Install new O-ring seals.

- Lubricate the refrigerant system with the correct amount of clean PAG oil. For additional information, refer to Climate Control System - General Information and Diagnostics Refrigerant Oil Adding.

9. Evacuate, leak test and charge the refrigerant system. For additional information, refer to Climate Control System - General Information and Diagnostics Air Conditioning (A/C) System Recovery, Evacuation and Charging.