RL V6-3.7L (2009)
Expansion Valve: Service and Repair
A/C Expansion Valve Replacement
1. Recover the refrigerant with a recovery/recycling/charging station. See: Service and Repair/A/C Refrigerant Recovery
2. Remove the engine cover. See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair
3. Remove the bolt, then disconnect the A/C lines (A) from the evaporator core.
4. Remove the blower unit. See: Blower Motor/Service and Repair/Blower Unit Removal/Installation
5. Remove the self-tapping screws and the expansion valve cover (A), then remove the bolts and the pipe (B) without bending the lines.
6. Remove the seals (A), the bolts, the O-rings (B), and the expansion valve (C) without bending the pipe.
7. Install the valve in the reverse order of removal, and note these items:
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If you're installing a new expansion valve, add refrigerant oil (DENSO ND-OIL 8). See: Refrigerant Oil/Service and Repair
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Replace the O-rings with new ones at each fitting, and apply a thin coat of refrigerant oil before installing them. Be sure to use the correct
O-rings for HFC-134a (R-134a) to avoid leakage.
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Immediately after using the oil, reinstall the cap on the container, and seal it to avoid moisture absorption.
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Do not spill the refrigerant oil on the vehicle; it may damage the paint; if the refrigerant oil contacts the paint, wash it off immediately.
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Make sure that there is no air leakage.
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Charge the system. See: Service and Repair/A/C System Charging