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Expansion Valve Replacement

  1. Remove the blower/evaporator unit (see BLOWER/EVAPORATOR UNIT REMOVAL/INSTALLATION ).
  2. Remove the evaporator core (see BLOWER/EVAPORATOR UNIT COMPONENT REPLACEMENT ).
  3. Remove the bolts (A).
    Fig 1: Bolts, Outer Seal And Expansion Valve With Torque Specifications
    G06232276Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Remove the outer seal (B) and the expansion valve (C).
  5. Install the expansion valve 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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