| 1. | Recover the refrigerant with a recovery/recycling/charging station. |
| 2. | Remove the relief valve cover (A), the relief valve (B), and the O-ring (C). Plug the opening to keep foreign matter from entering the system and the A/C compressor oil from running out.
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| 3. | Clean the mating surfaces. |
| 4. | Replace the O-ring with a new one at the relief valve, and apply a thin coat of refrigerant oil before installing it. |
| 5. | Remove the plug, and install and tighten the relief valve. |
| 6. | Charge the system. |