Category Archives: ACtion Magazine

All about truck and off road mobile A/C

Posted on July 1, 2019 by

So where do we go from here? That is the question.  There aren’t a whole lot of new things we can do with an air conditioning system to improve how it works.  Oh, there are some incremental things to enhance … Continue reading →

Posted in #off road vehicles, ACtion Magazine, Automotive training, MACS Member, Mobile Air Conditioning | Tagged , , , , , | Leave a comment

The future is electric!

Posted on June 6, 2019 by

June ACTION 2019 Hybrid and electric vehicle air conditioning compressor hardware, power controls and diagnostics For more than 15 years, hybrid and electric vehicles have been using electric air conditioning compressors.  The reason for the use of these air conditioning … Continue reading →

Posted in #1234yf, ACtion Magazine, Automotive training, Electrical/Electronic, Hybrid, Refrigerants, Training | Tagged , , , , , , , , | 2 Comments

Finding yf (2019 Refrigerant Update)

Posted on May 20, 2019 by

By Steve Schaeber, MACS Technical Editor (May 20, 2019) ©2019 Mobile Air Conditioning Society Worldwide As part of our continuing effort to document the industry’s changeover to R-1234yf, MACS once again attended the Philadelphia Auto Show to see the new … Continue reading →

Posted in #1234yf, ACtion Magazine, Automotive, MACS Member, Mobile Air Conditioning, Refrigerants, Uncategorized | Leave a comment

Are you making the most of your equipment?

Posted on April 30, 2019 by

Independent garages have been slow to make the investment in equipment to work on R-1234yf systems, and many car dealers’ service departments couldn’t be happier about that.  When the car manufacturers, whose products they sell, began the changeover, new recovery/recycle/recharge … Continue reading →

Posted in #1234yf, ACtion Magazine, Automotive, Automotive training, MACS Member | Tagged , , , , , | Leave a comment

Are you ready for A/C season?

Posted on April 10, 2019 by

Reviewing the fundamentals: Pressures We started out with a brief review of A/C system pressure testing order to build up to the major point of the class which was the effect of variable displacement compressor solenoids on temperature and pressure … Continue reading →

Posted in #1234yf, ACtion Magazine, Automotive, Automotive training, MACS Member, Mobile Air Conditioning | Leave a comment

Do you know how to find coolant leaks?

Posted on February 28, 2019 by

Finding Coolant Leaks Some days, around this time of year, it feels like all we do is chase down coolant leaks. Maybe that has something to do with weather patterns and large swings in ambient temperature. It may also relate … Continue reading →

Posted in #1234yf, #off road vehicles, ACtion Magazine, Automotive, Hybrid, Mobile Air Conditioning, Training | Tagged , , , | Leave a comment

Do you know your HVAC components?

Posted on August 30, 2018 by

  The first part of any good under-hood inspection should include a label check. The labels below provide us with refrigerant charge specifications to correlate to the OE specifications found in service information. Notice the specifications for the R-1234yf charge … Continue reading →

Posted in #1234yf, ACtion Magazine, Automotive Aftermarket, Mobile Air Conditioning, Training | Tagged , , , , | Leave a comment

Installation and modification of A/C systems for US and imported vehicles

Posted on July 18, 2018 by

By Ward Atkinson Members have requested information regarding requirements that apply to vehicles produced by OEM vehicle manufacturers, commercial upfitters and independent A/C repair or service facilities that install or modify mobile A/C systems. All A/C refrigerants listed as acceptable, … Continue reading →

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Spin-On Coolant Filters

Posted on July 6, 2018 by

By Chris Tyson, MACS Heavy Duty Contributor While rarely seen in automotive and light truck systems, engine coolant filters (sometimes called water filters) can be found on many over-the-road, heavy duty truck and off-road engine cooling system applications. While most … Continue reading →

Posted in #off road vehicles, ACtion Magazine, Mobile Air Conditioning, Uncategorized | Leave a comment

The new world of HD and off-road equipment cooling

Posted on June 29, 2018 by

By Jerry Lemon, Lemco Mobile AC Consulting Welcome to the new world of HD and off-road air conditioning. There was a time, not that long ago, when the HVAC system in a piece of heavy equipment, or an over-the-road (OTR) … Continue reading →

Posted in #off road vehicles, ACtion Magazine, Uncategorized | Leave a comment