A/C Compressor Relief Valve Replacement

WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Recover the refrigerant with a recovery/recycling/ charging station (see REFRIGERANT RECOVERY ).
Remove the relief valve (A) and the O-ring (B). Plug the opening to keep foreign matter from entering the system and the A/C compressor oil from running out.

Fig 1: Removing Relief Valve And O-Ring
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Clean the mating surfaces.
Replace the O-ring with a new one at the relief valve, and apply a thin coat of refrigerant oil before installing it.
Remove the plug, and install and tighten the relief valve.
Charge the system (see SYSTEM CHARGING ).