A/C System Filtering

Set, A/C Fittings:

REFRIGERANT SYSTEM FILTERING AFTER A/C COMPRESSOR REPLACEMENT
1. Install the replacement A/C compressor.
2. Install the replacement suction accumulator/drier.
3. Install the replacement A/C evaporator core orifice.





4. Be sure the filter inlet is toward the A/C condenser core.

NOTE: The pancake filter is not permanently installed and will be removed at the end of this procedure.





5. Temporarily install the pancake filter between the A/C condenser core and the condenser to evaporator tube.
1 Use flexible refrigerant hose of 17,238 kPa (2500 psi) burst rating.
2 Make the connections using the A/C Test Fitting Set.





6. Permanently install the suction filter in the evaporator to compressor suction line close to the A/C compressor.
1 Remove a length of suction hose (close to the compressor end) to accommodate the suction filter.
2 Install two O-ring seals on each end of the suction filter.
3 Install the suction filter in the evaporator to compressor suction line with arrow pointing in the direction of refrigerant flow.
4 Install the clamps. Tighten to 6.2 N.m (54 Lb/In).
7. Properly oil match the system.
8. Evacuate and charge the system. Evacuation and Charging
9. 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.





10. Provide adequate airflow to the front of the vehicle (with a fan, if necessary). Press the override button for MAX A/C operation and rotate the blower motor speed control fully up. Start the engine and let it idle briefly. Make sure the A/C system is operating properly.
11. 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.
12. Stop the engine.
13. Recover the refrigerant from the system. Evacuation and Charging
14. Remove the fittings, flexible hoses and pancake filter from between the A/C condenser core and the condenser to evaporator tube.
15. Discard the pancake filter. It can be used one time only.
16. Reconnect the condenser to evaporator tube to the A/C condenser core.
17. Evacuate and charge the system. Evacuation and Charging