Tools Required

Important: Flushing is not intended to remove metal from the A/C system.

Flushing is intended to remove the following:

Important: Warmer engine or ambient temperature decreases the refrigerant recovery time during the A/C flush procedure.

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
2. Remove the TXV. Refer to Thermal Expansion Valve Replacement .
3. Install the J 45268-110.
4. Remove the compressor. Refer to Air Conditioning Compressor Replacement .
5. Install the J 45268-12 to the discharge hose.
6. Install the J 45268-13 to the suction hose.



7. Forward flow refrigerant flushing is recommended for contaminated refrigerant or PAG oil.

Perform the following procedure:

Important: The filter inside the J 45268-1 is serviceable. Remove and discard the check valve from the filter.

7.1.	Service the filter with ACDelco P/N GF 470, before each flush.

Connect the J 45268-1 flush filter to the suction port of the J 45268-3 flush adapter.

7.2.	Connect the blue hose from the J 43600 to the J 45268-1 flush filter adapter.

7.3.	Connect the red hose from the J 43600 to the J 45268-3 flush adapter.

8. Reverse flow refrigerant flush is recommended for desiccant bag failure.

Replace the desiccant bag when the A/C flush is complete and perform the following procedure:

Important: The filter inside the J 45268-1 is serviceable. Remove and discard the check valve from the filter.

8.1.	Service the filter with ACDelco P/N GF 470, before each flush.

Connect J 45268-1 flush filter to the discharge port of the J 45268-3 flush adapter.

8.2.	Replace the desiccant bag. Refer to Air Conditioning Refrigerant Desiccant Replacement .

8.3.	Connect the blue hose from the J 43600 to the J 45268-1 flush filter adapter.

8.4.	Connect the red hose from the J 43600 to the suction port of the J 45268-3 flush adapter.

9. Flush the A/C system. Follow the instructions supplied with the J 43600 .

Close the valve on the external refrigerant tank, before starting the flush process.

10. Remove the J 45268-13 from the suction hose.
11. Remove the J 45268-12 from the discharge hose.
12. Remove the J 45268-1 from the J 43600 .
13. Drain the PAG oil from the A/C compressor, through the suction and discharge ports.

Important: Flushing will remove the fluorescent leak detection dye from the A/C system.

14. Add one bottle of J 41447 to the A/C compressor.
15. Install the compressor. Refer to Air Conditioning Compressor Replacement .
16. Remove the J 45268-110.
17. Inspect the TXV for debris.

Clean or replace as needed.

18. Install the TXV. Refer to Thermal Expansion Valve Replacement .
19. Replace the desiccant bag. Refer to Air Conditioning Refrigerant Desiccant Replacement .
20. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .

Important: Flushing will remove all of the PAG oil from the A/C system.

21. Add the total system capacity of PAG oil to the A/C system. Refer to Refrigerant System Capacities .
22. Leak test the fittings using the J 42220 .