Flushing

FLUSHING

TOOLS REQUIRED
- J 43600 Air Conditioning Service Center
- J 45268 Flush Adapter Kit
- J 41447 Leak Detection Dye
- J 42220 Universal 12V Leak Detection Lamp

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:
- Contaminated polyalkyline glycol (PAG) oil
- Desiccant, following a desiccant bag failure
- Overcharge of PAG oil
- Refrigerant contamination

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.

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

2. Remove the thermal expansion valve (TXV).
3. Install J 45268 - 103.
4. Remove the A/C compressor.
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:
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.

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

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

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

2. Connect the blue hose from J 43600 to J 45268 - 1 flush filter adapter.
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.
13. Drain the PAG oil from the A/C compressor.Rotate the compressor input shaft to assist in draining the PAG oil from the compressor.

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.

14. Add the total system capacity of PAG oil to the A/C compressor. Refer to Refrigerant System Capacities.
15. Add one bottle of J 41447 directly to the A/C compressor.

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

16. Install the A/C compressor.
17. Remove J 45268 - 103.
18. Install new seal washers.
19. Inspect the TXV for debris. Clean or replace as needed.
20. Install the TXV.
21. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
22. Leak test the fittings using J 42220.