Flushing

FLUSHING

TOOLS REQUIRED
- J 43600 ACR 2000 Air Conditioning Service Center
- J 45268 A/C Flush 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 with the ACR 2000 is not intended to remove metal from the air conditioning (A/C) system.

Flushing is intended to remove the following contaminants:
- Contaminated polyalkylene glycol (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 orifice tube.
3. Connect the A/C lines with the orifice tube removed.
4. Remove the A/C compressor.
5. Install J 45268-3 to the A/C compressor hose assembly.

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




6. Forward flow refrigerant flushing is recommended for contaminated refrigerant or PAG oil.
Perform the following procedure:
6.1. Service the filter with ACDelco P/N GF 470, before each flush.
Connect J 45268-1 flush filter to the suction port of J 45268-3 flush adapter.
6.2. Connect the blue hose from J 43600 to J 45268-1 flush filter adapter.
6.3. Connect the red hose from J 43600 to J 45268-3.

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

7. Reverse flow refrigerant flushing is recommended for desiccant bag failure only. Perform the following procedure and replace the accumulator when the flush is complete:
7.1. Service the filter with ACDelco P/N GF 470, before each flush.
7.2. Connect J 45268-1 flush filter to the discharge port of J 45268-3 flush adapter.
7.3. Connect the blue hose from J 43600 to J 45268-1 flush filter adapter.
7.4. Connect the red hose from J 43600 to the suction port of J 45268-3.

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

8. Flush the A/C system. Follow the instructions supplied with the J 43600.
9. Remove J 45268-3 from the A/C compressor hose assembly.

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.

10. If you will reinstall the removed A/C compressor, perform the following procedure:
10.1. Drain the PAG oil from the A/C compressor. Rotate the compressor input shaft to assist in draining the PAG oil from the compressor.
10.2. Add the total system capacity of PAG oil to the A/C compressor. Refer to Refrigerant System Capacities (L36)Refrigerant System Capacities (LD8).
11. If you will replace the A/C compressor after flushing the system, perform the following procedure:
11.1. Determine if the new service compressor is shipped with PAG oil. Refer to the Refrigerant System Capacities (L36)Refrigerant System Capacities (LD8).
11.2. If the service compressor is shipped with PAG oil, DO NOT drain the new PAG oil from the compressor.
11.3. 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 (L36)Refrigerant System Capacities (LD8).
11.4. Add the calculated amount to the compressor, as needed.
11.5. If the service compressor is shipped dry, no calculation is required. Add the total system capacity of PAG oil to the compressor. Refer to Refrigerant System Capacities (L36)Refrigerant System Capacities (LD8).
12. Install the A/C compressor.
13. Inspect the orifice tube for debris. Clean or replace as needed.
14. Install the orifice tube.
15. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.

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

16. Add one bottle of J 41447 using J 41459.
17. Leak test the fittings using J 42220.