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.

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.

With the vehicle in NEUTRAL, position it on a hoist.

2. Recover the refrigerant.
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 (11 lb-ft).

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.

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

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