Mobile A/C service tip: mind the service port caps

By Steve Schaeber, MACS Worldwide

You’ve probably heard this from MACS’ before, but it bears repeating.  Service port caps are the primary seal for an A/C system’s service ports.  Making sure they are in place and properly installed is one of the first and most important steps a technician can take. This doesn’t only apply to when performing A/C service on your customer’s vehicles.  Any time you see a vehicle come in your bay, and the service port caps are missing, you should always notify the customer, and recommend that they have new caps installed.  Not only will this help to prevent refrigerant from leaking out of their A/C system, but it will also help keep their A/C system performing at its very best.  After all, a properly charged system will provide optimum performance, and as refrigerant leaks out, performance only has one way to go, and that’s down!


2004 Acura

2001 Acura

Here’s a 2001 Acura 3.5TL that came into the MACS shop today.  Can you guess what was the first thing I noticed?

S1540072 (Fig 2)

This cap “less” port has been getting SLAMMED with ram air, along with all the rain water and road debris that goes along with it. S1540075 (Fig 3)

I love the location where Honda decided to place the high side service port on this vehicle.  In fact, you really can’t ask for better placement.  Talk about convenient!

S1540073 (Fig 4)

Same goes for the low side port; a great location, convenient, and easy to access.  There’s plenty of room for connecting your hoses.  Not to mention, they placed the J639 label right near the low side port, so there’s no hunting around for the information!

If you’re a service professional and not a MACS member yet, you should be, for more information.
You can E-mail us at . To locate a Mobile Air Conditioning Society member repair shop in your area. Click here to find out more about your car’s mobile A/C and engine cooling system.

The 35th annual Mobile Air Conditioning Society (MACS) Worldwide Training Conference and Trade Show, Meet me at MACS Make Connections that Matter, February 5-7, 2015 at the Caribe Royale, Orlando, FL.




About macsworldwide

Mobile Air Conditioning Society (MACS) Worldwide Founded in 1981, MACS is the leading non-profit trade association for the mobile air conditioning, heating and engine cooling system segment of the automotive aftermarket. Since 1991, MACS has assisted more than 600,000 technicians to comply with the 1990 U.S. EPA Clean Air Act requirements for certification in refrigerant recovery and recycling to protect the environment. The Mobile Air Conditioning Society (MACS) Worldwide’s mission is clear and focused--as the recognized global authority on mobile air conditioning and heat transfer industry issues.
This entry was posted in Automotive, Automotive training, Mobile Air Conditioning, Refrigerants and tagged , , , , , , , , . Bookmark the permalink.

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