Refrigerant System Service Port Valve: Installing

NOTE:

Typical A/C system service port and refrigerant line shown.

-- Lubricate the valve core (3) with clean refrigerant oil prior to installation. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.

-- Remove the tape or plug from the service port (2).

CAUTION:

A valve core that is not fully seated in the A/C service port can result in damage to the valve during refrigerant system evacuation and charge. Such damage may result in a loss of system refrigerant while uncoupling the charge adapters.

-- Using a Schrader type valve core tool, install the valve core into the service ports. Tighten the valve core for low side to 0.4 Nm (4 in lbs) and high side to 2.3 Nm (20 in lbs).

-- Evacuate the refrigerant system. Refer to REFRIGERANT SYSTEM, EVACUATE .

-- Charge the refrigerant system. Refer to REFRIGERANT SYSTEM, CHARGING .

NOTE:

The protective cap helps aid in service port sealing and helps protects the refrigerant system from contamination. Remember to always reinstall the protective cap onto the service port when refrigerant system service is complete.

-- Install the protective cap (1) onto the service port. Tighten the cap to 0.6 Nm (5 in lbs).

Fig 1: Identifying Typical A/C System Service Port And Refrigerant Line

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.