Refrigerant Filter: Service and Repair
A/C REFRIGERANT SYSTEM FILTERINGCAUTION: Follow all refrigerant system safety and service precautions.
A Filter Kit should be installed in the refrigerant system prior to the installation of the replacement A/C compressor. The pancake filter, supplied with each kit, should be temporarily installed in the liquid line between the A/C condenser core the A/C evaporator core orifice. The suction filter, supplied with each kit, should be installed in the suction line between the suction accumulator/drier and the A/C compressor. Install the replacement A/C compressor and the filters. Filter Kit for systems with nylon lined suction hose is Ford part number F2VY-19E773-C.
1. Before removing any refrigerant system components, recover the system refrigerant following the approved recycling methods. Refrigerant Recovery
2. Remove the suction accumulator/drier and drain the oil into a calibrated container.
3. Install a new suction accumulator/drier and add new Motorcraft YN-12b refrigerant oil or equivalent meeting Ford specification WSH-M1C231-B to replace the old oil. The quantity of new oil to be added is the amount to match that drained from the old accumulator plus 60 ml (2 oz.).
NOTE: Due to the internal design of the suction accumulator/drier, it will be necessary to drill two 13 mm (0.5 inch) holes in the suction accumulator/drier cylinder to drain the oil from the suction accumulator/drier.
4. Install a new A/C evaporator core orifice. If the A/C evaporator core orifice is located in the condenser to evaporator tube between the A/C condenser core and the A/C evaporator core, replace the condenser to evaporator tube assembly.
5. Temporarily install the pancake filter in the condenser to evaporator tube between the A/C condenser core and the A/C evaporator core orifice. Be sure the filter inlet is toward the A/C condenser core. Connections can be made using A/C Test Adapter Set, D93L-19703-B, and flexible refrigerant hose of 2500 psi burst rating. Individual fittings are also available.
6. Remove the old A/C compressor and drain the oil into a calibrated container.
7. Drain the oil from the replacement A/C compressor into a clean calibrated container.
8. A new service replacement FS-10 A/C compressor may or may not contain 207 ml (7 oz.) of refrigerant oil. If the amount of oil drained from the removed A/C compressor is between 90 and 148 ml (3 to 5 oz.), pour the same amount of clean refrigerant oil into the new A/C compressor. If the amount of oil drained from the old A/C compressor is greater than 148 ml (5 oz.), add an equivalent of clean refrigerant oil into the new A/C compressor. If the amount of refrigerant oil drained from the old A/C compressor is less than 90 ml(3 oz.), pour 90 ml (3 oz.) of clean refrigerant oil into the new A/C compressor. Use Motorcraft YN-12b Refrigerant Oil or equivalent meeting Ford specification WSH-M1C231-B.
9. Install the new A/C compressor. Be sure all mounting bolts are tightened properly. Check the tension of the A/C compressor drive belt.
10. Install the suction filter in the suction hose close to the A/C compressor. Suction filter is for nylon lined core hose. These filters have two grooves in the end tubes to accommodate O-ring seals.
NOTE: It will be necessary to transfer the A/C clutch from the old A/C compressor to the replacement A/C compressor.
11. Remove a length of suction hose (close to the A/C compressor end) to accommodate the suction filter and install the filter using A/C hose clamps. Be sure filter is correctly oriented for refrigerant system flow. Check the label on the filter. If using the filter for a nylon lined hose, install O-ring seals included in the Filter Kit (two on each filter tube).
12. Leak test, evacuate, and charge the system. Service and Repair
13. Check all refrigerant system hoses, lines, and the positioning of the newly installed filters to be sure they do not interfere with other engine compartment components. If necessary, use tie straps to make adjustments.
14. Set the A/C control on MAX A/C, high blower motor and temperature control at full cold. Start engine and let it idle briefly. Make sure the A/C system is operating properly.
15. Gradually bring the engine up to 1200 rpm by running it at lower rpms for short periods (first at 800 rpm, then at 1000 rpm). Set the engine at 1200 rpm and run it for an hour with the A/C system operating.
16. Stop the engine.
17. Recover the refrigerant from the system using a recovery machine. Refrigerant Recovery
18. Allow the engine to cool sufficiently to remove the fittings, flexible hoses and pancake filter from the condenser to evaporator tube.
19. Discard the pancake filter. It can be used one time only.
20. Reconnect the condenser to evaporator tube back into the system.
21. Evacuate, charge, and leak test the system. Make any necessary adjustments. Service and Repair
22. Check the operation of the system in all control function selector lever positions.