Accumulator HVAC: Service and Repair

SUCTION ACCUMULATOR

REMOVAL

CAUTION: Refrigerant compressor oil (mineral oil) F73Z-19577-AA (Motorcraft YN-9-A) should be used to lubricate R-134a refrigerant system O-ring seals only and should not be added to the R-134a refrigerant system as an A/C compressor lubricant. PAG refrigerant compressor oil F7AZ-19D589-DA (Motorcraft YN-12-C) or equivalent meeting Ford specification WSH-M1C231-B only should be used as an A/C compressor lubricant.

1. Recover the refrigerant.







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







3. CAUTION: Use a back-up wrench to prevent damage to the tubes.

Disconnect the suction accumulator refrigerant lines.
- Discard the O-ring seals.







4. Remove the three suction accumulator bracket screws and the suction accumulator.

INSTALLATION
1. To install, reverse the removal procedure.
- If a new suction accumulator is to be installed, transfer the A/C cycling switch to the new suction accumulator.
- Lubricate the refrigerant system with the correct amount of clean PAG oil or equivalent.
- Install new O-ring seals lubricated in clean mineral oil.

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