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Front Expansion Valve Replacement

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. 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 front evaporator core (see FRONT EVAPORATOR CORE REPLACEMENT  ).
  3. Remove the bolts, then remove the front expansion valve (A) and O-rings (B).
    Fig 1: Locating Bolts, Front Expansion Valve And O-Rings
    G08058013Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Install the front expansion valve in the reverse order of removal, and note these items:
    • 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.
    • 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 are no leaks.
    • Charge the system (see SYSTEM CHARGING  ).
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