Tools Required

Important: Flushing with the ACR 2000 is not intended to remove metal from the A/C system.

Flushing is intended to remove the following contaminants:

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 J 45268 - 103.
4. Remove the A/C compressor. Refer to Air Conditioning Compressor Replacement .
5. Install J 45268 - 5 to the discharge hose.
6. Install J 45268 - 4 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 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 J 45268 - 1 flush filter to the suction port of J 45268 - 4 flush adapter.

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

7.3.	Connect the red hose from J 43600 to J 45268 - 5 flush adapter.

8. Reverse flow refrigerant flush is recommended for desiccant bag failure. Replace the receiver dehydrator when the A/C flush is complete and perform the following procedure:

Important: The filter inside 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 J 45268 - 5 flush adapter.

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

8.3.	Connect the red hose from J 43600 to the suction port of J 45268 - 4 flush adapter.

9. Flush the A/C system. Follow the instructions supplied with J 43600 . Close the valve on the external refrigerant tank, before starting the flush process.
10. Remove J 45268 - 4 from the suction hose.
11. Remove J 45268 - 5 from the discharge hose.
12. Remove J 45268 - 1 from J 43600 .

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

The A/C system must be replenished with the correct amount of PAG oil.
13. If you will reinstall the removed A/C compressor, perform the following procedure:

13.1.

Drain the PAG oil from the A/C compressor.

Rotate the compressor input shaft to assist in draining the PAG oil from the compressor.

13.2.

Add the total system capacity of PAG oil to the A/C compressor. Refer to Refrigerant System Capacities .

14. If you will replace the A/C compressor after flushing the system, perform the following procedure:

14.1.

A new service compressor is shipped with PAG oil. Refer to the Refrigerant System Capacities .

14.2.

Deduct the amount of PAG oil shipped with the service compressor from the amount of PAG oil listed in the capacities table. Refer to Refrigerant System Capacities . Add the calculated amount to the compressor, as needed.

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

15. Add one bottle of J 41447 directly to the A/C compressor.
16. Install the A/C compressor. Refer to Air Conditioning Compressor Replacement .
17. Remove J 45268 - 103.
18. Install new seal washers. Refer to Sealing Washer Replacement .
19. Inspect the TXV for debris. Clean or replace as needed.
20. Install the TXV. Refer to Thermal Expansion Valve Replacement .
21. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
22. Leak test the fittings using J 42220 .