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.
- Care should be taken to minimize exposure of the suction accumulator desiccant to the atmosphere. Do not remove the shipping caps from the new suction accumulator until immediately before the line fittings are to be attached. Evacuation of the refrigerant system must be started as soon as the new suction accumulator is installed.

1. Recover the refrigerant.
2. Remove the PCM.
3. Remove the battery and battery tray.
4. Remove the PCM bracket.
1 Remove the 3 PCM bracket bolts.
2 Remove the PCM bracket.
- To install, tighten to 10 Nm (89 lb-in).

5. Remove the suction accumulator outlet fitting nut and disconnect the fitting.
- Discard the O-ring seal.
- To install, tighten to 8 Nm (71 lb-in).

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

7. Remove the 2 suction accumulator bracket nuts.
- To install, tighten to 9 Nm (80 lb-in).

8. Remove the suction accumulator.
9. To install, reverse the removal procedure.
- Install new O-ring seals.
- Lubricate the refrigerant system with the correct amount of clean PAG oil.

10. Evacuate, leak test and charge the refrigerant system.