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Heavy Duty

Texas Truck A/C thrives for 25 years

March 29, 2021

As Texas Truck A/C owners, employees, and customers celebrate the company’s 25th anniversary of being in operation, this business demonstrates what it means to not only survive for 25 years but to thrive.
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ParkSmart Bunk A/C System Freightliner P3 Cascadia

March 24, 2021

The ParkSmart auxiliary HVAC system has been offered to replace the standard auxiliary HVAC unit.
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Why does the replacement compressor use different oil (than the original unit)

March 23, 2021

That is viscosity and specifically why a replacement compressor might use a different viscosity oil than its OEM counterpart.
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Tank full of air!

March 15, 2021

The problem is usually caused by excessive air in a system, and since too few shops use a refrigerant identifier, they don’t know when these problems come up, nor how often they are solving problems by doing this.
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Time to plug into EV training

March 10, 2021

Read any automotive publication or website, and you will see numerous stories from all the big automotive manufacturers and quite a few shiny new start-ups about vehicle electrification.
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Helpful tips to register for MACS online training clinics

March 5, 2021

Helpful tips on how to register for a class on the MACS website
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Proper compressor draining and filling procedures

March 2, 2021

A different procedure is required on a lot of other compressors and based on my tech line experience: a huge number of technicians are not aware of this.
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Caveman to Mr. Cool

February 18, 2021

Over 300,000 years ago, modern man began walking the earth relying heavily on his five senses-- especially sight – to hunt, find joy, and avoid danger. In 1914, Garrett Morgan, who decided it was important to protect man’s eyes during hazardous situations, developed what we know today as ‘safety’ glasses.
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Doing the repair right

February 4, 2021

By Richard Hawkins, MACS Contributor The focus in the two previous weeks articles on the Chevy Tahoe was on what went wrong and what should have been done to correct...
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OSHA and HazCom citations

December 14, 2020

By Charles Ayers, CCAR By the time you read this, the Occupation Safety and Health Administration (OSHA) will have released its “Top 10 Most Frequently Cited” list for fiscal year...
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Safety Alert: Online Sales of Cool Penguin F-12

November 23, 2020

Refrigerant safety alert
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Long exposure of car driving down highway

Connector testing and repair

July 22, 2020

By Larry Turay In the previous issue, wiring harness issues were discussed. The subject of harness issues continues with a look at connectors and connections either in the harness or...
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