Expansion Block/Orifice Tube: Service and Repair
EVAPORATOR CORE ORIFICESpecial Tool(s):
Special Tool(s)
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-19589-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 contamination from a failed A/C compressor or damage to the suction accumulator.
1. Remove the condenser to evaporator line.
2. Inspect the evaporator core orifice for damage before attempting to remove it from the line.
3. 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.
4. 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.
Installation
1. Lubricate the evaporator core orifice O-rings with clean mineral oil and install the evaporator core orifice using the special tool.
2. Install the condenser to evaporator line.