Thunderbird V8-4.6L VIN W (1997)
Expansion Block/Orifice Tube: Service and Repair
A/C Evaporator Core Orifice
The A/C evaporator core orifice should be replaced whenever an A/C compressor is replaced for lack of performance (internal damage).
The A/C evaporator core orifice, located in the condenser to evaporator tube, cannot be serviced in detail as a component of the line. If replacement is
necessary, follow the removal and installation.
An orifice tube replacement service kit may be used as an optional service procedure.
Removal
1. To remove and install condenser to evaporator tube with integral A/C evaporator core orifice, discharge refrigerant from A/C system. Observe
all safety precautions.
2. Loosen clamp from air cleaner to intake tube and position aside.
3. Remove nut retaining condenser to evaporator tube bracket on strut tower.
4. Disconnect condenser to evaporator tube at A/C condenser core outlet connection using procedure and one of spring lock coupling tools shown
in the Spring Lock Coupling illustration.
5. Disconnect A/C evaporator core inlet connection using procedure and one of spring lock coupling tools shown in the Spring Lock Coupling
illustration. Remove condenser to evaporator tube from vehicle.
Installation
1. Route new condenser to evaporator tube and integral A/C evaporator core orifice with protective caps installed.
2. Remove protective caps and connect new condenser to evaporator tube into system using new O-ring seals lubricated with clean refrigerant oil.
Connect spring lock coupling as shown in the Spring Lock Coupling illustration.
3. Install air cleaner to intake tube.
4. Leak-test, evacuate and charge refrigerant system. Observe all safety precautions.
