2014 Jeep Wrangler JK Factory Service Manual 24 - Heating and Air Conditioning

CORE, Service Port Valve

DESCRIPTION

Refrigerant system service ports are used to recover, recycle, evacuate, charge and test the A/C refrigerant system. Unique sizes are used on the two service ports for the R-134a refrigerant system to ensure the system is not accidentally contaminated with R-12 refrigerant or by service equipment used for R-12 refrigerant.

The high side service port (1) is located on the A/C liquid line (2) near the left front of the engine compartment. The low side service port (3) is located on the A/C suction line (4) near the A/C expansion valve at the dash panel. Both the high side and low side A/C service port valve cores are serviceable.



NOTE:

The protective cap aids 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.

Each of the service ports has a threaded plastic protective cap installed over it from the factory. The service port caps are serviceable items.

REMOVAL

WARNING:

Review the warnings and cautions for this system before performing the procedure. Failure to follow these instructions may result in serious injury or death.




NOTE:

Typical A/C service port shown.

  1. Remove the protective cap (1) from the service port (2).

    2.  
  2. Recover the refrigerant from the refrigerant system (Refer to 24 - Heating and Air Conditioning/Plumbing - Standard Procedure) .

    3.  
  3. Using a Schrader-type valve core tool, remove the valve core (3) from the service port.

    4.  
  4. Install a plug in, or tape over the opened service port(s).

    5.  

INSTALLATION

NOTE:

Typical A/C service port shown.

  1. 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.

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

    CAUTION:

    Damage may result to a service port valve core if the valve core is not fully seated in the A/C service port. Such damage can result in a loss of refrigerant.


    3.  
  3. Install and tighten the valve core into the service port(s) using a Schrader type valve core tool.

    4.  
  4. Evacuate and charge the refrigerant system (Refer to 24 - Heating and Air Conditioning/Plumbing - Standard Procedure) .

    NOTE:

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


    5.  
  5. Install the protective cap (1) onto the service port.

    6.