E 150 1/2 Ton Van V6-4.2L VIN 2 (1997)
Service Port HVAC: Description and Operation
NOTE: The R-134a low-side quick connect and the R-134a high-side quick connect fittings are required to connect to both high-and low-side ports.
The service gauge port valves are quick-connect fittings located in the compressor discharge line of the A/C manifold and tube (high-pressure side) and
in the suction accumulator/drier (low-pressure side).
