Front Refrigerant System Service Equipment

Front Refrigerant System Service Equipment


Review the applicable warnings and cautions for this system before performing the following operation. Refer to => [ Refrigerant Warnings ] Refrigerant Warnings.


Eye protection must be worn when servicing an A/C refrigerant system. Turn all valves off (rotate clockwise) on the equipment being used before connecting or disconnecting service equipment from the refrigerant system. Failure to observe these warnings may result in serious or fatal injury.








When servicing the A/C system, a R-134a refrigerant recovery/recycling/charging station that meets SAE standard J2788 must be used (1). Per SAE standard J2788, refrigerant recovery stations must recover 95% of the refrigerant system within 30 minutes at 21.1 degrees C (70 degrees F) and be able to measure the amount of refrigerant removed from the system to an accuracy of 28 grams (1 oz.). When charging, the refrigerant recovery station must charge the system to an accuracy of 14 grams (0.5 oz.). Contact an automotive service equipment supplier for refrigerant recovery/recycling/charging equipment. See the operating instructions supplied by the equipment manufacturer for proper care and use of this equipment.






A manifold gauge set (1) may be needed with some recovery/recycling/charging equipment. The manifold gauge set should have manual shut off valves (2 and 6), or automatic back-flow valves located at the service port connector end of the manifold gauge set hoses (4 and 5). This will prevent refrigerant from being released into the atmosphere.

Manifold Gauge Set Connections


Do not use an R-12 manifold gauge set on an R-134a system. The refrigerants are not compatible and system damage will result.

Recovery/Recycling/Evacuation/Charging Hose The center manifold hose (Yellow, or White, with Black stripe) (3) is used to recover, evacuate, and charge the refrigerant system. When the low or high pressure valves on the manifold gauge set are opened, the refrigerant in the system will escape through this hose.

High Pressure Gauge Hose The high pressure hose (Red with Black stripe) (4) attaches to the high side service port. This service port is located on the A/C liquid line between the A/C condenser and the A/C receiver/drier. On this model, an A/C pressure transducer is installed on the A/C receiver/drier. A/C high-side pressures can be read using a scan tool.

Low Pressure Gauge Hose The low pressure hose (Blue with Black stripe) (5) attaches to the low side service port. This service port is located on the A/C suction line near the expansion valve at the dash panel.