Expansion Block/Orifice Tube: Service and Repair

EVAPORATOR CORE ORIFICE

Special Tool(s):

Special Tool(s)

Removal

All vehicles
1. Recover the refrigerant.







2. Access and disconnect the condenser-to-evaporator line spring lock coupling from the evaporator core inlet.
- Discard the O-ring seals.







3. Inspect the evaporator core orifice for damage.

Vehicles with a serviceable evaporator core orifice







4. Engage the special tool to the evaporator core orifice.







5. Holding the special tool T-handle stationary, rotate the special tool body to remove the evaporator core orifice.

Vehicles with a damaged or broken evaporator core orifice







6. Screw the end of the special tool into the broken evaporator core orifice.







7. Holding the special tool T-handle stationary, rotate the special tool body to remove the evaporator core orifice.

Installation

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. Install new O-ring seals on the evaporator core orifice.
- Lubricate the O-ring seals with clean PAG oil.







2. Position the evaporator core orifice into the special tool.







3. Using the special tool, install the evaporator core orifice.







4. Connect the condenser-to-evaporator line spring lock coupling to the evaporator inlet.
- Install new O-ring seals lubricated with clean mineral oil.

5. Lubricate the refrigerant system with the correct amount of clean PAG oil.
6. Evacuate, leak test and charge the refrigerant system.