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Expansion Valve Replacement

WARNING: This page is about a different car, the 2008 Acura TSX, 2007 Acura TSX, 2006 Acura TSX, 2005 Acura TSX, and 2004 Acura TSX. 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 BLOWER UNIT COMPONENT REPLACEMENT  ).
  3. Remove the expansion valve cover (A), and bolts (B) from the expansion valve (C).
    Fig 1: Expansion Valve Cover Bolts W/Torque Specification
    G05492692Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Install the core in the reverse order of removal, and note these items:
    • If you're installing a new expansion valve, add refrigerant oil (SP-10) (see A/C REFRIGERANT OIL REPLACEMENT  ).
    • 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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