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Expansion Valve Replacement

WARNING: This page is about a different car, the 2008 Acura TL and 2007 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
  1. Recover the refrigerant with a recovery/recycling/ charging station (see REFRIGERANT RECOVERY  ).
  2. Remove the evaporator core (see EVAPORATOR CORE REPLACEMENT  ).
  3. Remove the expansion valve cover (A), and bolts, then replace the expansion valve (B) from the evaporator (C).
    Fig 1: Expansion Valve Cover, Expansion Valve And Evaporator With Torque Specifications
    G05462509Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Install the valve in the reverse order of removal, and note these items:
    • If you're installing a new expansion valve, add refrigerant oil (DENSO ND-OIL 8) (see A/C REFRIGERANT OIL REPLACEMENT  ).
    • Replace the O-rings (D) 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.
    • Immediately after using the oil, reinstall the cap on the container, and seal it to avoid moisture absorption.
    • 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.
    • Make sure that there is no air leakage.
    • Charge the system (see SYSTEM CHARGING  ).
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