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Front Expansion Valve Replacement

WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 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: Front Expansion Valve And O-Rings Bolts With Torque Specification
    G05487715Courtesy 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 is no air leakage.
    • Charge the system (see SYSTEM CHARGING  ).
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