Expansion Valve Replacement

Recover the refrigerant with a recovery/recycling/charging station (see REFRIGERANT RECOVERY ).
Remove the engine cover (see IGNITION COIL AND SPARK PLUG REMOVAL/INSTALLATION ).
Remove the bolt, then disconnect the A/C lines (A) from the evaporator core.

Fig 1: Disconnecting A/C Lines From Evaporator Core With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the blower unit (see DUST AND POLLEN FILTER REPLACEMENT ).
Remove the self-tapping screws and the expansion valve cover (A), then remove the bolts and the pipe/expansion valve (B) without bending the lines.

Fig 2: Removing Bolts And Pipe/Expansion Valve Without Bending Lines
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the seals (A), the bolts, the O-rings (B), and the expansion valve (C) without bending the lines.

Fig 3: Removing Seals, Bolts, O-Rings And Expansion Valve Without Bending Lines With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the 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 ).