Service Gauge Port Valves
WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
The high-pressure service gauge port valve is located on the A/C receiver/drier manifold and tube assembly.
The low-pressure service gauge port valve is located on the manifold of the A/C compressor manifold and tube assembly at the A/C compressor.
The fitting is an integral part of the refrigeration line or component.
- Special couplings are necessary for both the high side and low side service gauge ports.
- A very small amount of leakage will always be detectable around the Schrader-type valve with the A/C charging valve cap removed, and is considered normal. A new Schrader-type valve core can be installed if the seal leaks excessively.
- The A/C charging valve caps are used as primary seals in the refrigerant system to prevent leakage through the Schrader-type valves from reaching the atmosphere. Always install and tighten the A/C charging valve caps (19D702) to the correct torque after they are removed.
- Always install the A/C charging valve cap on the service gauge port valves after repairing the refrigerant system.