A/C System Filtering

Set, A/C Fittings:

Special Tools


PROCEDURE
1. Install the replacement A/C compressor.
2. Install the replacement suction accumulator/drier.
3. Install the replacement A/C evaporator core orifice.







4. Orient the filter inlet toward the A/C condenser core.







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 R-12/R-134a Air Conditioning Test Fitting Set.

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







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 the arrow pointing in the direction of refrigerant flow.
4 Install the clamps.
7. Properly oil match the system.
8. Evacuate and charge the system.
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). Select MAX A/C operation and set the blower motor speed to maximum. 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 one hour with the A/C system operating.
12. Stop the engine.
13. Recover the refrigerant from the system.
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.