Expansion Block/Orifice Tube: Service and Repair
EVAPORATOR CORE ORIFICE
Special Tool(s):
Material:
NOTICE: 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.
NOTE: Installation of a new suction accumulator is not required when repairing the air conditioning system, except when there is physical evidence of system contamination from a failed A/C compressor or damage to the suction accumulator.
NOTE: New O-ring seals, lubricated in clean mineral oil, must be installed before reconnecting any A/C fitting that has been disconnected.
1. Recover the refrigerant.
2. Remove the wiper mounting arm and pivot shaft.
3. Remove the parts in the order indicated in the illustration and table.
4. To install, Reverse the removal procedure.
5. Lubricate the refrigerant system with the correct amount of clean PAG oil.
6. Evacuate, leak test and charge the refrigerant system.
Evaporator Core Orifice Removal Note
1. Remove the nuts and the fresh air inlet duct.
2. Disconnect the condenser-to-evaporator line fitting at the evaporator core.
3. Disconnect the evaporator core orifice fitting and remove the evaporator end of the condenser-to-evaporator line.
4. Inspect the evaporator core orifice for damage before attempting to remove it from the line.
5. If the evaporator core orifice is intact, engage the special tool. Hold the T-handle stationary while rotating the tool body to remove the evaporator core orifice.
6. If the evaporator core orifice is broken, screw the end of the special tool into the broken orifice. Hold the T-handle stationary while rotating the tool body to remove the evaporator core orifice.
Evaporator Core Orifice Installation Note
1. Lubricate the evaporator core orifice O-rings in clean mineral oil and install the evaporator core orifice using the special tool.