Service Gauge Port Valves

The refrigerant system has a high-pressure (discharge) and a low-pressure (suction) gauge port valve. Quick disconnects must be used to make the manifold gauge set work. The R-134a low side quick disconnect is Rotunda tool number 176-R0026. The R-134a high side quick disconnect is Rotunda tool number 176-R0027.

Always replace the A/C charging valve cap (19D702) on the gauge port valves after servicing the refrigerant system.