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Front Expansion Valve Replacement

  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  ).