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Home › Acura › 2012 › TL Base › Repair and Diagnosis › Heating, Ventilation & A/C (HVAC) › HVAC Control Systems › Climate Control › Expansion Valve Replacement

Expansion Valve Replacement

  1. Remove the evaporator core (see EVAPORATOR CORE REPLACEMENT  ).
  2. Remove the insulator (A) and bolts, then remove the expansion valve (B) and the O-rings (C).
    Fig 1: Insulator, Expansion Valve And O-Rings With Torque Specifications
    G08071119Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Install the 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 air leaks.
    • Charge the system (see SYSTEM CHARGING  ).
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