Service Gauge Port Valves
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. 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 receiver/drier inlet line.
The low-pressure service gauge port valve is located on the evaporator outlet line.
NOTE:
Different valve cores are used for different engine applications. Use only the valve core listed in the Ford Catalog Advantage™ or equivalent for the vehicle and fitting being serviced.
Fig 1: Identifying Low-Pressure Service Gauge Port Valve Cap And Low-Pressure Service Gauge Port Valve
ITEM DESCRIPTION CHART
| Item | Part Number | Description |
|---|---|---|
| 1 | 19D702 | Low-pressure service gauge port valve cap |
| 2 | - | Low-pressure service gauge port valve (part of 19867 for non-hybrid) (part of 19D850 for hybrid) |
| 3 | 19D701 | Low-pressure Schrader-type valve |
| 4 | 19D701 | High-pressure Schrader-type valve |
| 5 | - | High-pressure service gauge port valve (part of 19C836 for non-hybrid) (part of 19835 for hybrid) |
| 6 | 19D702 | High-pressure service gauge port valve cap |
The fitting is an integral part of the refrigerant line or component.
- Special couplings are required 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 service gauge port valve cap removed, and is considered normal. A new Schrader-type valve core can be installed if the seal leaks excessively.
- The service gauge port 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 service gauge port valve caps to the correct torque after they are removed.