Flushing

TOOLS REQUIRED
^ J 43600 ACR 2000 Air Conditioning Service Center
^ J 45268 A/C Flushing Adapter Kit
^ J 41447 R-134A A/C Tracer Dye - Box of 24
^ J 41459 R-134A - A/C Tracer Dye Injector
^ J 42220 Universal 12V Leak Detection Lamp

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

Flushing is intended to remove the following:
^ Contaminated PAG oil
^ Desiccant, following a desiccant bag failure
^ Overcharge of PAG oil
^ Refrigerant contamination

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.
3. Install the J 45268-103.
4. Remove the A/C compressor.
5. Install the J 45268-5 to the discharge hose.
6. Install the 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 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 45268-4 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 45268-5 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 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 45268-5 flush adapter.
8.2. Connect the blue hose from the J 43600 to the J 45268-1 flush filter adapter.
8.3. Connect the red hose from the J 43600 to the suction port of the J 45268-4 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 45268-4 from the suction hose.
11. Remove the J 45268-5 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.
Rotate the compressor input shaft to assist in draining the PAG oil from the A/C compressor.
14. Install the A/C compressor.
15. Remove the J 45268-103. Install new seal washers.
16. Inspect the TXV for debris. Clean or replace as needed.
17. Install the TXV.
18. 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.

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

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

20. Add one bottle of J 41447 using the J 41459.
21. Leak test the fittings using the J 42220.