Flushing

FLUSHING

TOOLS REQUIRED
- J 43600 ACR 2000 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:
- Contaminated 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 orifice tube.
3. Connect the A/C lines with the orifice tube removed.
4. Remove the A/C compressor.
5. Install J 45268-5 to the A/C discharge hose.
6. Install J 45268-4 to the A/C 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. Install the blue hose from J 43600 to J 45268-1 flush filter adapter.
3. Install the red hose from J 43600 to J 45268-5.
8. Reverse flow refrigerant flushing is recommended for desiccant bag failure only.Perform the following procedure and replace the accumulator when the flush is complete:
1. Service the filter with ACDelco P/N GF 470, before each flush.Connect the J 45268-1 flush filter to the discharge port of the J 45268-5 flush adapter.

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

2. Install the blue hose from J 43600 to J 45268-1 flush filter adapter.
3. Install the red hose from J 43600 to the suction port of J 45268-4.
9. Flush the A/C system. Follow the instructions supplied with the J 43600.

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

10. Remove J 45268-4 from the A/C suction hose.
11. Remove J 45268-5 from the A/C discharge hose.
12. 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.

13. Add back the total system capacity of PAG oil to the A/C compressor. Refer to Refrigerant System Capacities.
14. 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.

15. Install the A/C compressor.
16. Inspect the orifice tube for debris. Clean or replace as needed.
17. Install the orifice tube.
18. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
19. Leak test the fittings using the J 42220.