Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 993 (CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS)GENERAL PROCEDURESAIR CONDITIONING (A/C) SYSTEM FLUSHING
2009 Mercury Milan Premier, 3.0 1, AWD
Air Conditioning (A/C) System Flushing
2009 Mercury Milan Premier, 3.0 1, AWDSECTION Air Conditioning (A/C) System Flushing
WARNING: This page is about a different car, the 2008 Mercury Milan, 2008 Lincoln MKZ, and 2008 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools
| Illustration | Tool Name | Tool Number |
|---|---|---|
| A/C Flush Adapter Kit | 219-00074 or equivalent | |
| A/C Flush and Purge Fitting Kit | 219-00024 or equivalent | |
| A/C Flush and Purge Machine | 219-00022 (part of 219-00023) or equivalent |
Material
| Item | Specification |
|---|---|
| A/C System Flushing Solvent YN-23 |
- |
| PAG Refrigerant Compressor Oil (R-134a Systems) YN-12-D |
WSH-M1C231-B |
WARNING:
Take the following precautions when repairing an air conditioning system containing R-134a:
- Always wear safety goggles.
- Avoid contact with liquid refrigerant R-134a. R-134a vaporizes at approximately -25°C (-13°F) under atmospheric pressure and will freeze skin tissue.
- Never allow refrigerant R-134a gas to escape in quantity in an occupied space. It will displace the oxygen needed to support life.
- Never use a torch in an atmosphere containing R-134a gas. R-134a is non-toxic at all normal conditions, but it decomposes when exposed to high temperatures such as a torch flame. During decomposition it releases irritating and toxic gasses (as described in the MSDS sheet from the manufacturer). Decomposition products are hydrofluoric acid, carbon dioxide and water.
Failure to follow these instructions may result in serious personal injury.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.