ZDX V6-3.7L (2010)
Expansion Valve: Service and Repair
Evaporator Expansion Valve Replacement
1. Remove the evaporator core See: Evaporator Core/Service and Repair.
2. Remove the insulator (A) and bolts, then remove the expansion valve (B) and O-rings (C).
3. Install the expansion valve in the reverse order of removal, and note these items:
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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 are no air leaks.
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Charge the system See: Service and Repair/A/C System Charging.
