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:

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 45268-103 in place of the TXV.
4. Remove the auxiliary TXV. Refer to Auxiliary Air Conditioning Evaporator Thermal Expansion Valve Replacement .
5. Install the J 45268-107 in place of the auxiliary TXV.
6. Remove the A/C compressor. Refer to Air Conditioning Compressor Replacement .
7. Install the J 45268-5 to the discharge hose.
8. Install the J 45268-4 to the suction hose.



9. 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.

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

9.2.	Connect the J 45268-1 to the suction port of the J 45268-4.

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

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

10. Reverse flow refrigerant flushing 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 the J 45268-1 is serviceable.

10.1.

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

10.2.

Connect the J 45268-1 to the discharge port of the J 45268-5.

10.3.

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

10.4.

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

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

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

Important: Flush the front A/C system before flushing the auxiliary A/C system.

12. If the vehicle is equipped with rear A/C, flush the auxiliary A/C system separately.

12.1.

Remove the J 45268-107 from the auxiliary evaporator core.

12.2.

Remove the J 45268-103 from the front evaporator core.

12.3.

Install the J 45268-103 to the auxiliary evaporator core.

12.4.

Install the J 45268-107 to the front evaporator core.

13. Flush the auxiliary A/C system. Follow the instructions supplied with the J 43600 .
14. Remove the J 45268--5 from the discharge hose.
15. Remove the J 45268--4 from the suction hose.
16. Drain the PAG oil from the A/C compressor, through the suction and discharge ports.

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

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

17. Add one bottle of J 41447 directly to the A/C compressor.
18. Install the A/C compressor. Refer to Air Conditioning Compressor Replacement .
19. Remove the J 45268-103.
20. Inspect the TXV for debris.

Clean or replace as needed.

21. Install the auxiliary TXV. Refer to Auxiliary Air Conditioning Evaporator Thermal Expansion Valve Replacement .
22. Remove the J 45268-107.
23. Inspect the TXV for debris.

Clean or replace as needed.

24. Install the TXV. Refer to Thermal Expansion Valve Replacement .
25. 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.

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