Tools Required

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

J 43600 Air Conditioning Service Center
J 45268 Flush Adapter Kit
J 41447 Leak Detection Dye
J 41459 Leak Detection Dye Injector
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 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.

Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
Remove the orifice tube. Refer to Expansion (Orifice) Tube Replacement .
Connect the A/C lines with the orifice tube removed.
Remove the A/C compressor. Refer to Compressor Replacement .
Install J 45268 to the A/C compressor hose assembly.
Forward flow refrigerant flushing is recommended for contaminated refrigerant or PAG oil.
Perform the following procedure:

Fig 1: Removing Check Valve From Filter
Courtesy of GENERAL MOTORS CORP.

Important: The filter inside J 45268 is serviceable. Remove and discard the check valve from the filter.
1. 6.1. Service the filter with AC Delco P/N GF 470, before each flush.
  Connect J 45268 flush filter to the suction port of J 45268 flush adapter.
2. 6.2. Connect the blue hose from J 43600 to J 45268 flush filter adapter.
3. 6.3. Connect the red hose from J 43600 to J 45268 .
Reverse flow refrigerant flushing is recommended for desiccant bag failure only.
Perform the following procedure and replace the accumulator when the flush is complete:

Important: The filter inside J 45268 is serviceable. Remove and discard the check valve from the filter.
1. 7.1. Service the filter with AC Delco P/N GF 470, before each flush.
  Connect J 45268 flush filter to the discharge port of J 45268 flush adapter.
2. 7.2. Connect the blue hose from J 43600 to J 45268 flush filter adapter.
3. 7.3. Connect the red hose from J 43600 to the suction port of J 45268 .
Important: Close the valve on the external refrigerant tank before starting the flush process.
Flush the A/C system. Follow the instructions supplied with J 43600.
Remove J 45268 from the A/C compressor hose assembly.
Important: Flushing will remove all the PAG oil from the A/C system. Replenish the A/C system with the correct amount of PAG oil.
If the removed A/C compressor will be reinstalled, perform the following steps:
1. 10.1. Remove the A/C compressor drain plug.
2. 10.2. Rotate the compressor input shaft to assist in draining the PAG oil from the compressor.
3. 10.3. Drain the PAG oil from the A/C compressor.
4. 10.4. Install the A/C compressor drain plug.
  Tighten
  
  Tighten the drain plug to 20 N.m (15 lb ft).
5. Add the total system capacity of PAG oil to the A/C compressor. Refer to Refrigerant System Capacities .
If you are replacing the A/C compressor after flushing the system, perform the following steps:
1. 11.1. Do NOT drain the new PAG oil from the compressor. 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 .
2. 11.2. Add the calculated amount of oil to the compressor, as needed.
Install the A/C compressor. Refer to compressor.
Inspect the orifice tube for debris. Clean or replace as needed.
Install the orifice tube. Refer to Expansion (Orifice) Tube Replacement .
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.
Add one bottle of J 41447 using J 41459.
Leak test the fittings using J 42220.