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Heavy Duty

Pacific Best returns to MACS TraDE Show

September 16, 2022

Participating members of MACS since 1999, Pacific Best Inc. (PBI) is a manufacturer’s master distributor of automotive cooling products. PBI offers the greatest selection of radiators, condensers, fan assemblies, intercoolers, external oil coolers and more for all makes and models. The manufacturers we partner with use the most advanced equipment and are operated by an experienced and professional team.
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CPI Fluid Engineering is a new MACS exhibitor

September 14, 2022

CPI, founded in 1971, is a global expert in engineering fluids for challenging applications in heat transfer and compression.  “Our mission is to advance the industries we serve by providing world-class engineered performance fluids, unmatched customer support and innovative collaboration.”
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Don’t overlook a diagnostic clue

September 13, 2022

When thinking about the topic of A/C diagnostic tools, a recovery, recycle, recharge machine (R/R/R machine) is not one of the first tools that comes to mind.  It may not come to mind at all in the world of inexperienced technicians. 
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UAC returns as a MACS Exhibitor

September 13, 2022

UAC is a family owned and operated company since 1988, from Mansfield, TX specializing in Temp Control and Engine Cooling products.
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IGas To Exhibit at MACS 2023 Trade Show

September 9, 2022

iGas USA, Inc. offers a full range of refrigerants. Originally joining MACS in 2017, iGas explains, “Our strength, and our mission, is to develop and bring to the market innovative solutions that will have a positive effect on a company's work and business. Each day we strive to design creative, safe and high-quality products that will: assist in lowering your cost of business, make daily work requirements easier, faster, and more economical and improve working conditions and the environment.”
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You Knucklehead, you caused this compressor to lock up!

September 7, 2022

Last week's article ended with the following: "As I was completing the job, it hit me what had happened and my first thought was:  You Knucklehead, you caused this compressor to lock up!"  
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MACS Welcomes ATech as an exhibitor

September 7, 2022

ATech Training was founded in 1984 with a desire to develop products that aid instructors in presenting a hands-on approach to teaching and learning the skills of diagnosing and repairing vehicles.
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Airworks will exhibit at MACS 2023 Trade Show

September 6, 2022

MACS is happy to welcome Airworks as a return exhibitor to MACS Training Event and Trade Show . The big event will take place February 2-4, 2023, at the Gaylord Opryland Resort and Convention Center in Nashville, TN. The Trade Show will be on Friday, February 3 from 10:30am-4pm
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Unlocking the compressor Lock up, PT. 2

August 30, 2022

I was driving the van home in the afternoon. It was about 45° F outside and the heater was on. It had been an uneventful 15 to 20 minutes’ drive at about 55 to 60 mph. Slowing down to make a 90 degree turn on to a different road, a faint grinding noise was heard. I rolled the window down and drove along at about 5 MPH and could hear the noise more distinctly. The next step was to pull over into a parking lot and leave the engine running and raise the hood.
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An expansion valve myth explored

July 26, 2022

I have encountered many tech calls where a technician had replaced an expansion valve because of a problem with an evaporator freezing up and was frustrated because that did not fix the problem.
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Improving A/C cool down time

July 19, 2022

If there is an issue with an A/C system, then obviously that needs to be fixed and that will aid in cool down time.  However, if a system is working properly and a customer is complaining, then the focus needs to shift toward educating the customer on steps they can take to improve cool down time.
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Diagnosing Faults on Modern Motor Vehicles

July 8, 2022

Motor vehicles have become increasingly more complex over the last two decades to meet the ever-tightening emissions regulations and increased fuel economy requirements, as well as passenger comfort and safety. This added complexity means technicians are flooded with additional data when diagnosing faults on vehicles. Below is a table outlining the difference between a modern vehicle and a vehicle from 20 years ago. This is only a high-level example to illustrate the differences
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