Monthly Archives: July 2016

Repeat blower motor issue


By Steve Schaeber, MACS Technical Editor An old boss of mine used to have a saying that goes something like: I ain’t got time to be doing the same thing two and three times! In fact, I can still picture … Continue reading

Posted in #1234yf, Electrical/Electronic, MACS Member, Mobile Air Conditioning, Training | Tagged , , , , , , | Leave a comment

US EPA, US DOT, California’s Air Resources Board Issue Draft Technical Assessment Report of Greenhouse Gas Emissions and Fuel Economy Standards for Model Year 2022-2025 Cars and Light Trucks


 The U.S. Department of Transportation (DOT), the U.S. Environmental Protection Agency (EPA), and the California Air Resource Board (CARB) today took the first step in the mid-term evaluation of the National Program for greenhouse gas emissions and fuel economy standards … Continue reading

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Change is coming to heavy duty refrigerants


By Steve Schaeber, MACS manager of service training Last year around this time the US Environmental Protection Agency (EPA) finalized Rule # 20, which was a Change of Status Rule affecting several industrial sectors including MVAC (Motor Vehicle Air Conditioning). … Continue reading

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

Servicing heavy duty truck, off-road and specialty vehicle A/C


By Robert Brocx The heavy duty truck, off-road work machine and specialty vehicle mobile air conditioning (HD MAC) industry has typically utilized air conditioning standards, procedures and technologies developed by the automotive industry and SAE Interior Climate Control Standards Committee … Continue reading

Posted in #off road vehicles, ACtion Magazine, MACS Training Event, Mobile Air Conditioning, Refrigerants | Tagged , , , , , , , | Leave a comment

Dr. Mark Quarto to Keynote MACS 2017 Training Event – Feb 16, 2017


The role of mobile air conditioning (A/C) systems has dramatically changed as hybrid, plug-In hybrid, battery electric, extended range electric vehicle, and fuel cell vehicle technologies continue to populate the vehicle landscape. No longer strictly for vehicle cabin cooling, the … Continue reading

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Clogged radiator!


Johnny’s Radiator in Warren, AR is very busy right now and trucks with clogged radiators like this are one reason why! Make sure air flow is not restricted. If you’re a service professional and not a MACS member yet, you … Continue reading

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Do you know how to handle A/C for off highway vehicles?


  Like the light duty world, most heavy duty HVAC systems are tested using a laptop and specific software. However, the Freightliner M2 Business Class Truck HVAC controls and blower motor circuits can still be checked using common items found … Continue reading

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