Changing the Fitting of a Car's High Service Port

Video Transcript

In this clip we're going to talk about the proper service procedure to retro fit your vehicle's air conditioning system from R12 to 134A and recharge the system. In this step we're going to talk about the proper method for locating your vehicle's high side service port and installing the retro fit fitting. Your high side service port, on this particular vehicle, happens to be located right here. It's a nice convenient location. It's right out in the open. How you determine what the high side service port is, is it will be located between the compressor and the condenser in the front of the engine. Now just because it's located between here geographically, doesn't indicated that it's the high side service port. What you want to do is follow the line from the back of the compressor, the actual outlet, all the way around to the condenser. The service port will be located in that line somewhere. What you'll do then is take and unscrew the cap and discard it. This cap will no longer work for the system. Once you remove and discard the factory fitting, you're going to want to take and clean this thread surface up, so your sealing and locking compound will work correctly. I like to use rubbing alcohol for this. Just take and clean the threads up on there. If the threads had been extremely corroded, if somebody had removed the cap at one point in time and lost it and left it exposed to the atmosphere, you may have to use a wire brush to clean off the corrosion. If you don't, the thread sealant will not perform correctly. Once you have the threads cleaned, you can take and install your high side service fitting. As you can see, down inside the fitting there's some pink goo, and an o ring. The o ring there is for sealing purposes. The pink goo is the thread locking compound. We're going to take and slip it over the high side service port. We're going to screw it down and tight. Once you have it hand tight, you can take and torque it with a wrench. Now being the way this line is, and it's not hard mounted on a stable component. You can see it flexes. In order to avoid damaging the line, you're going to want to hold on to it while you tighten it. And there you go. Once this fitting is installed, and the thread locking and sealing compound is cured, it is a permanent fitting. You are not able to remove that again. If you attempt it, it will damage either this fitting or snap the factory fitting off of the line. That is the proper way to locate your high side service port and install your retro fit.

Watch these related videos

• 
  Changing the Fitting of a Car's High Service Port

  playlist Views: 1,089

• 
  Changing the Fitting of a Car's Low Service Port

  playlist Views: 1,219

• 
  Car Air Conditioner Parts: Condenser Unit

  playlist Views: 4,346

• 
  Hooking a Refrigerant Canister to a Car's Low Service Port

  playlist Views: 1,481

• 
  Path of Compressed Air in a Car Air Conditioner

  playlist Views: 3,782

• 
  Ford Explorer & Mercury Mountaineer: Recharging Air Conditioning

  playlist Views: 591

Community Members who...

• Favorited this Video
• Rated This Video

Top Tags