Accumulator HVAC: Service and Repair

Air Conditioning Accumulator Replacement

Special Tools

J 39400-A Halogen Leak Detector

Removal Procedure

1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging (Refrigerant Recovery and Recharging).
2. Remove the coolant reservoir. Refer to Coolant Recovery Reservoir Replacement (Coolant Recovery Reservoir Replacement).




3. Disconnect the electrical connector (2) from A/C low pressure sensor (1).
4. Remove the evaporator outlet pipe retaining nut (3) from the accumulator.




5. Remove the compressor suction hose retaining nut (1).
6. Remove the compressor suction hose from the accumulator.




7. Remove the retaining screw (4) from the accumulator retaining bracket (2).
8. Remove the accumulator (1).
9. Remove the sealing washers.

Installation Procedure

1. If replacing the accumulator, add the specified amount of PAG oil directly into the accumulator. Refer to Refrigerant System Specifications ([1][2]Capacity Specifications).




2. Install the accumulator (1).

Caution: Refer to Fastener Caution (Fastener Caution).

3. Install the screw (4) to the accumulator retaining bracket (2) and tighten to 9 Nm (80 lb in).




4. Connect the low pressure sensor electrical connector (1).




5. Install new sealing washers. Refer to Air Conditioning System Seal Replacement (Air Conditioning System Seal Replacement).
6. Install the evaporator outlet pipe.
7. Install the evaporator outlet pipe retaining nut (1) to the accumulator and tighten to 16 Nm (12 lb ft).
8. Install the compressor suction hose.
9. Install the compressor suction hose retaining nut (2) to the accumulator and tighten to 16 Nm (12 lb ft).
10. Install the coolant reservoir. Refer to Coolant Recovery Reservoir Replacement (Coolant Recovery Reservoir Replacement).
11. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging (Refrigerant Recovery and Recharging).
12. Leak test the fittings of the component using the J 39400-A.